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    756 Products

    Machine Key Stock

    Cut this square or rectangular key stock to length to create a straight machine key. Straight keys are the most common type of key. Machine keys are often the same material as the shaft and other components with which they are used. To use a key as a sacrificial part, choose a softer key that will shear off when parts are exposed to excessive force, preventing damage to expensive equipment.
    1008-1045 Carbon Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    1008-1045 carbon steel key stock is an economical choice with good strength.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    12" Long
    1/16" × 1/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A00500000
    1/16" × 1/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5110000
    3/32" × 3/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A0500000
    3/32" × 3/32"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5120000
    1/8" × 1/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A1000000
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5140000
    1/8" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A5160000
    1/8" × 3/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5170000
    1/8" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A51800000
    1/8" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5190000
    5/32" × 5/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A1250000
    5/32" × 5/32"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5210000
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A1500000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5220000
    3/16" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A5240000
    3/16" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5250000
    7/32" × 7/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A1350000
    1/4" × 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A2000000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5260000
    1/4" × 5/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A5280000
    1/4" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5290000
    1/4" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A5310000
    1/4" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5320000
    1/4" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A5330000
    1/4" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5340000
    9/32" × 9/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A2250000
    5/16" × 5/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A2500000
    5/16" × 5/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5350000
    5/16" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A2550000
    5/16" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5370000
    3/8" × 3/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A3000000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5380000
    3/8" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A3050000
    3/8" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A1490000
    7/16" × 7/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A3250000
    7/16" × 7/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5410000
    1/2" × 1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A3500000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5420000
    1/2" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A3550000
    1/2" × 3/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A34800000
    9/16" × 9/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A3600000
    9/16" × 9/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A9690000
    5/8" × 5/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A3700000
    11/16" × 11/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A38000000
    11/16" × 11/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A32600000
    3/4" × 3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A39000000
    13/16" × 13/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A40000000
    7/8" × 7/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A41000000
    7/8" × 7/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A54400000
    1" × 1"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A42000000
    1" × 1"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A54600000
    1 1/4" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098830A43000000
    1 1/4" × 1 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A54800000
     
    36" Long
    1/16" × 1/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A7010000
    3/32" × 3/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A7220000
    3/32" × 3/32"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5130000
    1/8" × 1/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A7430000
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5150000
    5/32" × 5/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A7650000
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A7820000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5230000
    7/32" × 7/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A8120000
    1/4" × 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A8360000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5270000
    9/32" × 9/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A8540000
    5/16" × 5/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A8790000
    5/16" × 5/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A5360000
    3/8" × 3/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A89100000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A53900000
    7/16" × 7/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A90600000
    1/2" × 1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A91100000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A54300000
    9/16" × 9/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A93600000
    5/8" × 5/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A94900000
    5/8" × 5/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A55100000
    11/16" × 11/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A96300000
    3/4" × 3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A97100000
    3/4" × 3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098830A55200000
    13/16" × 13/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A97900000
    7/8" × 7/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A98500000
    7/8" × 7/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A54500000
    1" × 1"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A98900000
    1" × 1"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A547000000
    1 1/4" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098830A99300000
    1 1/4" × 1 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A54900000
     
    72" Long
    1/8" × 1/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A5200000
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A5400000
    1/4" × 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A56000000
    5/16" × 5/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A58000000
    3/8" × 3/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A61000000
    1/2" × 1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A63000000
    5/8" × 5/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A65000000
    3/4" × 3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A66000000
    7/8" × 7/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A670000000
    1" × 1"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A675000000
    1 1/4" × 1 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A680000000
     
    305 mm Long
    2 mm × 2 mmUndersized-0.025 mm to 0.000 mm-0.025 mm to 0.000 mmRockwell B87DIN 688092288A7100000
    3 mm × 3 mmUndersized-0.025 mm to 0.000 mm-0.025 mm to 0.000 mmRockwell B87DIN 688092288A7150000
    3 mm × 5 mmUndersized-0.060 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A5170000
    4 mm × 4 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A4900000
    4 mm × 4 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A7200000
    4 mm × 6 mmUndersized-0.075 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A5180000
    4 mm × 7 mmUndersized-0.030 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A5190000
    5 mm × 5 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A4930000
    5 mm × 5 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A7250000
    5 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A50800000
    5 mm × 8 mmUndersized-0.030 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A5200000
    6 mm × 6 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A4980000
    6 mm × 6 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A7300000
    6 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A25900000
    6 mm × 10 mmUndersized-0.030 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A5210000
    6 mm × 12 mmUndersized-0.075 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A5220000
    6 mm × 14 mmUndersized-0.075 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A5230000
    7 mm × 7 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A5010000
    7 mm × 7 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A7350000
    7 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A50900000
    7 mm × 8 mmUndersized-0.090 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A7400000
    7 mm × 18 mmUndersized-0.090 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A52500000
    8 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A5110000
    8 mm × 8 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A7550000
    8 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A2620000
    8 mm × 10 mmUndersized-0.036 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A7500000
    8 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A30700000
    8 mm × 12 mmUndersized-0.036 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A7450000
    8 mm × 20 mmUndersized-0.090 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A52600000
    9 mm × 14 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A33400000
    9 mm × 14 mmUndersized-0.090 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A7600000
    10 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A25300000
    10 mm × 10 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A7650000
    10 mm × 12 mmUndersized-0.036 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A22900000
    10 mm × 16 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A39000000
    10 mm × 16 mmUndersized-0.090 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A52800000
    11 mm × 18 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A41200000
    11 mm × 18 mmUndersized-0.110 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A52900000
    12 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A29700000
    12 mm × 12 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A53000000
    12 mm × 20 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A44800000
    12 mm × 20 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A53100000
    14 mm × 14 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A32100000
    14 mm × 14 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A53200000
    14 mm × 22 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A53300000
    14 mm × 25 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A46300000
    14 mm × 25 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A53400000
    16 mm × 16 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A39900000
    16 mm × 16 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A53500000
    16 mm × 28 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A48800000
    16 mm × 28 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A53600000
    18 mm × 18 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A43100000
    18 mm × 18 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A53700000
    18 mm × 32 mmUndersized-0.110 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A53800000
    20 mm × 20 mmUndersized-0.052 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A53900000
    20 mm × 36 mmUndersized-0.130 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A54000000
    22 mm × 22 mmUndersized-0.052 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A54100000
    22 mm × 40 mmUndersized-0.130 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A54200000
    25 mm × 45 mmUndersized-0.130 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A54400000
    28 mm × 50 mmUndersized-0.130 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A54500000
     
    1,000 mm Long
    2 mm × 2 mmUndersized-0.025 mm to 0.000 mm-0.025 mm to 0.000 mmRockwell B87DIN 688092288A5630000
    3 mm × 3 mmUndersized-0.025 mm to 0.000 mm-0.025 mm to 0.000 mmRockwell B87DIN 688092288A5640000
    3 mm × 5 mmUndersized-0.060 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A55200000
    4 mm × 4 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A5650000
    4 mm × 6 mmUndersized-0.075 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A55300000
    4 mm × 7 mmUndersized-0.030 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A55400000
    5 mm × 5 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A5660000
    5 mm × 8 mmUndersized-0.030 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A55500000
    6 mm × 6 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B87DIN 688092288A56700000
    6 mm × 10 mmUndersized-0.030 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A55600000
    6 mm × 12 mmUndersized-0.075 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A55700000
    6 mm × 14 mmUndersized-0.075 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A55800000
    7 mm × 7 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A56800000
    7 mm × 8 mmUndersized-0.090 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A56900000
    8 mm × 8 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A57000000
    8 mm × 10 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A57100000
    8 mm × 12 mmUndersized-0.036 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A57200000
    9 mm × 14 mmUndersized-0.090 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A57300000
    10 mm × 10 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B87DIN 688092288A57400000
    10 mm × 12 mmUndersized-0.036 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A25200000
    10 mm × 16 mmUndersized-0.090 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A57500000
    11 mm × 18 mmUndersized-0.110 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A57600000
    12 mm × 12 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A57700000
    12 mm × 20 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A57800000
    14 mm × 14 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A57900000
    14 mm × 22 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A58000000
    14 mm × 25 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A581000000
    16 mm × 16 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A58200000
    16 mm × 28 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A583000000
    18 mm × 18 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B87DIN 688092288A58400000
    18 mm × 32 mmUndersized-0.110 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A585000000
    20 mm × 20 mmUndersized-0.052 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A58600000
    20 mm × 36 mmUndersized-0.130 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A587000000
    22 mm × 22 mmUndersized-0.052 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B87DIN 688092288A588000000
    22 mm × 40 mmUndersized-0.130 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A589000000
    25 mm × 45 mmUndersized-0.130 mm to 0.000 mm-0.062 mm to 0.000 mmRockwell B87DIN 688092288A591000000
     
    Zinc-Plated 1008-1045 Carbon Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    Zinc-plated 1008-1045 carbon steel key stock is an economical choice with good strength and resists corrosion in wet environments.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs. Met
    Each
    12" Long
    1/16" × 1/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A09700000
    1/16" × 1/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A2870000
    3/32" × 3/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A0980000
    3/32" × 3/32"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A4110000
    7/64" × 7/64"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A09900000
    1/8" × 1/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A1000000
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A1000000
    1/8" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1010000
    1/8" × 3/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1150000
    1/8" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A10200000
    1/8" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1200000
    1/8" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A10400000
    1/8" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A10600000
    1/8" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A10800000
    1/8" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A11000000
    5/32" × 5/32"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1120000
    5/32" × 5/32"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A4120000
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A1170000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A1170000
    3/16" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1180000
    3/16" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1250000
    3/16" × 5/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1190000
    3/16" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1400000
    3/16" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A12000000
    3/16" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1550000
    3/16" × 7/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A12300000
    3/16" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A12100000
    3/16" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A12500000
    3/16" × 7/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A12700000
    7/32" × 7/32"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A1310000
    1/4" × 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A1360000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A1360000
    1/4" × 5/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1370000
    1/4" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1450000
    1/4" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1380000
    1/4" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1570000
    1/4" × 7/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A13900000
    1/4" × 7/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A16700000
    1/4" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1400000
    1/4" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1810000
    1/4" × 9/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A14100000
    1/4" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A14200000
    1/4" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A14400000
    9/32" × 9/32"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1430000
    5/16" × 5/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A1500000
    5/16" × 5/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A1500000
    5/16" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1510000
    5/16" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1600000
    5/16" × 7/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A15600000
    5/16" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A15300000
    5/16" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1820000
    5/16" × 9/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A15400000
    5/16" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A15500000
    5/16" × 5/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A19400000
    5/16" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A16100000
    3/8" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1650000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A1650000
    3/8" × 7/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A16600000
    3/8" × 7/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A17000000
    3/8" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1670000
    3/8" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1840000
    3/8" × 9/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A17000000
    3/8" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A16800000
    3/8" × 5/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A19600000
    3/8" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A16900000
    3/8" × 3/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A40600000
    3/8" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A17500000
    7/16" × 7/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A1790000
    7/16" × 7/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A1790000
    7/16" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1800000
    7/16" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A18600000
    7/16" × 9/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A17800000
    7/16" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A1810000
    7/16" × 5/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A46900000
    7/16" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A18200000
    1/2" × 1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A18700000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A18700000
    1/2" × 9/16"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A20200000
    1/2" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A18800000
    1/2" × 5/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A19800000
    1/2" × 11/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A18900000
    1/2" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A19000000
    1/2" × 3/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A36000000
    1/2" × 7/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A20100000
    1/2" × 7/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A48100000
    1/2" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A20300000
    1/2" × 1"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B5098491A19800000
    9/16" × 9/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A20400000
    9/16" × 9/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A19000000
    9/16" × 5/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A20500000
    9/16" × 5/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A47300000
    9/16" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A21000000
    9/16" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A21100000
    9/16" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A21200000
    5/8" × 5/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A20600000
    5/8" × 5/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A20600000
    5/8" × 11/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A21300000
    5/8" × 3/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A20700000
    5/8" × 3/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A44700000
    5/8" × 7/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A20800000
    5/8" × 7/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B5098491A94700000
    5/8" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A20900000
    5/8" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A21400000
    11/16" × 11/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A22000000
    11/16" × 3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A22100000
    11/16" × 7/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A22200000
    11/16" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A22300000
    3/4" × 3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A22600000
    3/4" × 3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A22600000
    3/4" × 7/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A22700000
    3/4" × 7/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A56300000
    3/4" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A22800000
    3/4" × 1"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A41300000
    3/4" × 1 1/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A22900000
    3/4" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A23800000
    3/4" × 1 1/2"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A239000000
    13/16" × 13/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A24100000
    7/8" × 7/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A24200000
    7/8" × 7/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098510A24500000
    7/8" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A24600000
    7/8" × 1"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B5098491A25000000
    7/8" × 1 1/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A247000000
    7/8" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A24900000
    7/8" × 1 1/4"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B5098491A16400000
    15/16" × 15/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A25300000
    1" × 5/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 198491A84200000
    1" × 1"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A25700000
    1" × 1"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A25700000
    1" × 1 1/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A25900000
    1" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A25800000
    1" × 1 1/4"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B5098491A15700000
    1" × 1 1/2"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A26100000
    1" × 1 1/2"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B5098491A12400000
    1" × 2"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B5098491A264000000
    1 1/16" × 1 1/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A26600000
    1 1/8" × 1 1/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A26300000
    1 1/8" × 1 1/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A26000000
    1 1/8" × 1 1/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A26500000
    1 3/16" × 1 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A26700000
    1 1/4" × 1 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A26800000
    1 1/4" × 1 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A27000000
    1 1/4" × 1 3/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A269000000
    1 1/4" × 1 1/2"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A27100000
    1 1/4" × 1 3/4"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B5098491A273000000
    1 5/16" × 1 5/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A35000000
    1 3/8" × 1 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A275000000
    1 3/8" × 1 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A28000000
    1 1/2" × 1 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A27800000
    1 1/2" × 1 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A29000000
    1 1/2" × 1 3/4"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B5098491A280000000
    1 1/2" × 2"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B5098491A282000000
    1 5/8" × 1 5/8"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A284000000
    1 3/4" × 1 3/4"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A286000000
    1 3/4" × 1 3/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A300000000
    2" × 2"Oversized0.000" to 0.004"0.000" to 0.004"Rockwell B5098491A290000000
    2" × 2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A310000000
     
    36" Long
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A4140000
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A4150000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A4160000
    1/4" × 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A4170000
    1/4" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A41800000
    5/16" × 5/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A41900000
    5/16" × 5/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A42100000
    3/8" × 3/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A42200000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A42300000
    3/8" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A42400000
    7/16" × 7/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A42500000
    7/16" × 7/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A42600000
    1/2" × 1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A42700000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A42800000
    5/8" × 5/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A42900000
    5/8" × 5/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A43100000
    3/4" × 3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098491A43200000
    3/4" × 3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B5098491A43300000
    7/8" × 7/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A434000000
    7/8" × 7/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A43500000
    1" × 1"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A436000000
    1" × 1"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098491A437000000
     
    305 mm Long
    4 mm × 4 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A1100000
    5 mm × 5 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A1200000
    5 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A1250000
    6 mm × 6 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A1400000
    6 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A14500000
    6 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A15000000
    6 mm × 14 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A15200000
    7 mm × 7 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A1550000
    7 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A1600000
    7 mm × 16 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A17000000
    7 mm × 18 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A18000000
    8 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A2300000
    8 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A2400000
    8 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A2450000
    8 mm × 20 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A24700000
    9 mm × 14 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A25500000
    9 mm × 22 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A28000000
    10 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A29000000
    10 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A29500000
    10 mm × 16 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A30000000
    11 mm × 18 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A32000000
    12 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A33000000
    12 mm × 20 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A34000000
    14 mm × 14 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A35000000
    14 mm × 22 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A35500000
    14 mm × 25 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A36000000
    16 mm × 16 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A37500000
    16 mm × 28 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A40000000
    18 mm × 18 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A42500000
    18 mm × 18 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmNot RatedDIN 688092288A23800000
    18 mm × 32 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A42800000
    20 mm × 20 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A43000000
    20 mm × 36 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A44000000
    22 mm × 22 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A45000000
    22 mm × 40 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A51500000
    25 mm × 25 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A60000000
    25 mm × 28 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8792288A620000000
     
    Zinc-Yellow-Chromate-Plated 1045 Carbon Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    Zinc-yellow-chromate-plated 1045 carbon steel key stock is an economical choice with good strength and resists corrosion in wet environments.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A76100000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A7660000
    5 mm × 8 mmUndersized-0.070 to 0.000-0.040 to 0.000Rockwell B87DIN 688092288A78000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A7700000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A7760000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A78400000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A7900000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A6900000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A7010000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A71100000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A67900000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A69100000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A71400000
    11 mm × 18 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A72200000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A70000000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A73100000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A70700000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A74400000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A74800000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A71600000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A74900000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A75100000
    20 mm × 20 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A73300000
     
    1095 Spring Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    1095 spring steel key stock is an economical choice with good strength.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    1/16" × 1/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A12000000
    3/32" × 3/32"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A1250000
    1/8" × 1/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A1300000
    1/8" × 3/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A13200000
    1/8" × 1/4"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A13600000
    5/32" × 5/32"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A13800000
    3/16" × 3/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A1400000
    3/16" × 1/4"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A1460000
    3/16" × 3/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A14700000
    1/4" × 1/4"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A1500000
    1/4" × 5/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A15200000
    1/4" × 3/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A15400000
    1/4" × 1/2"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A15600000
    5/16" × 5/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A1600000
    5/16" × 3/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A16200000
    5/16" × 1/2"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A16400000
    3/8" × 3/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A17000000
    3/8" × 1/2"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A17200000
    3/8" × 5/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A16800000
    3/8" × 3/4"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A16600000
    7/16" × 7/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A18000000
    7/16" × 1/2"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A18400000
    7/16" × 5/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A18300000
    1/2" × 1/2"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A19000000
    1/2" × 5/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A19100000
    1/2" × 3/4"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A19600000
    1/2" × 1"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A19500000
    9/16" × 9/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A20000000
    5/8" × 5/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A21000000
    5/8" × 3/4"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A21200000
    5/8" × 7/8"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A21500000
    3/4" × 3/4"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A22000000
    3/4" × 7/8"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A22500000
    3/4" × 1"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A22700000
    7/8" × 7/8"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A23000000
    1" × 1"Standard-0.001" to 0.002"-0.001" to 0.002"Rockwell B9098535A24000000
    1 1/4" × 1 1/4"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B9098535A250000000
     
    36" Long
    1/8" × 1/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A41000000
    3/16" × 3/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A44000000
    1/4" × 1/4"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A45000000
    5/16" × 5/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A56000000
    3/8" × 3/8"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A57000000
    1/2" × 1/2"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A59000000
     
    4140 Alloy Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    4140 alloy steel key stock is an economical choice with good strength. 4140 alloy steel key stock has greater strength and toughness after hardening than carbon steel, making it useful for high-stress applications.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B90DIN 688092288A65600000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688092288A6570000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688092288A6580000
    6 mm × 6 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B9092288A6660000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688092288A6590000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B90DIN 688092288A6600000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B90DIN 688092288A66100000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B90DIN 688092288A66200000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B90DIN 688092288A66300000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B90DIN 688092288A66400000
    12 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B9092288A51300000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B90DIN 688092288A66500000
     
    1,000 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B90DIN 688092288A6670000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688092288A6680000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688092288A66900000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688092288A67000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B90DIN 688092288A67100000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B90DIN 688092288A67200000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B90DIN 688092288A67300000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B90DIN 688092288A67400000
     
    8630 Alloy Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    8630 alloy steel key stock is an economical choice with good strength.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    ASME B17.1 Class 2—Key stock that meets ASME B17.1 Class 2 specifications conforms to ASME standards for dimensions and tolerances.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs. Met
    Each
    12" Long
    1/8" × 1/8"Oversized0.000" to 0.001"0.000" to 0.001"Rockwell B50ASME B17.1 Class 299020A41500000
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Not Rated99020A7990000
    3/16" × 3/16"Oversized0.000" to 0.001"0.000" to 0.001"Rockwell B50ASME B17.1 Class 299020A4200000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Not Rated99020A8060000
    1/4" × 1/4"Oversized0.000" to 0.001"0.000" to 0.001"Rockwell B50ASME B17.1 Class 299020A4250000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Not Rated99020A7900000
    5/16" × 5/16"Oversized0.000" to 0.001"0.000" to 0.001"Rockwell B50ASME B17.1 Class 299020A4300000
    5/16" × 5/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Not Rated99020A8190000
    3/8" × 3/8"Oversized0.000" to 0.001"0.000" to 0.001"Rockwell B50ASME B17.1 Class 299020A4350000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Not Rated99020A8090000
    1/2" × 1/2"Oversized0.000" to 0.001"0.000" to 0.001"Rockwell B50ASME B17.1 Class 299020A4400000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Not Rated99020A58500000
     
    18-8 Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    18-8 stainless steel key stock offers a balance of strength and corrosion resistance. It may be mildly magnetic. 18-8 stainless steel key stock is more corrosion resistant than steel key stock.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    12" Long
    1/8" × 1/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A10000000
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A1000000
    5/32" × 5/32"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8292530A3110000
    5/32" × 5/32"Standard-0.002" to 0.001"-0.002" to 0.001"Rockwell B8292530A1050000
    3/16" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A1170000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A1170000
    3/16" × 1/4"Standard-0.002" to 0.002"-0.005" to 0.005"Rockwell B8292530A1100000
    3/16" × 1/2"Standard-0.008" to 0.008"-0.015" to 0.015"Rockwell B8092530A11800000
    1/4" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A1360000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A1360000
    1/4" × 1/2"Standard-0.008" to 0.008"-0.015" to 0.015"Rockwell B8092530A13700000
    5/16" × 5/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A1500000
    5/16" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8292530A1500000
    3/8" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A16500000
    3/8" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8292530A16500000
    3/8" × 1/2"Standard-0.008" to 0.008"-0.015" to 0.015"Rockwell B8092530A16600000
    3/8" × 3/4"Standard-0.008" to 0.008"-0.015" to 0.015"Rockwell B8092530A16700000
    7/16" × 7/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A17900000
    7/16" × 7/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8292530A17900000
    1/2" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A18700000
    1/2" × 1/2"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A18700000
    1/2" × 3/4"Standard-0.008" to 0.008"-0.015" to 0.015"Rockwell B8092530A18000000
    9/16" × 9/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A18800000
    9/16" × 9/16"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A18800000
    5/8" × 5/8"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B8298493A20600000
    5/8" × 5/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A20600000
    5/8" × 3/4"Standard-0.015" to 0.015"-0.015" to 0.015"Rockwell B8092530A20700000
    5/8" × 1"Standard-0.015" to 0.015"-0.015" to 0.015"Rockwell B8092530A20800000
    3/4" × 3/4"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B8298493A22600000
    3/4" × 3/4"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A22600000
    3/4" × 1"Standard-0.015" to 0.015"-0.015" to 0.015"Rockwell B8092530A227000000
    7/8" × 7/8"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B8298493A24500000
    7/8" × 7/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A24500000
    1" × 1"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B8298493A25700000
    1" × 1"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A25700000
    1 1/4" × 1 1/4"Oversized0.000" to 0.006"0.000" to 0.006"Rockwell B8298493A830000000
    1 1/4" × 1 1/4"Undersized-0.006" to 0.000"-0.006" to 0.000"Rockwell B8292530A26000000
    1 1/2" × 1 1/2"Undersized-0.006" to 0.000"-0.006" to 0.000"Rockwell B8292530A265000000
    1 3/4" × 1 3/4"Undersized-0.006" to 0.000"-0.006" to 0.000"Rockwell B8292530A270000000
    2" × 2"Undersized-0.006" to 0.000"-0.006" to 0.000"Rockwell B8292530A275000000
     
    36" Long
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A3120000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A31300000
    1/4" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8292530A31400000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A31500000
    5/16" × 5/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8292530A31600000
    5/16" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8292530A31700000
    3/8" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8292530A31800000
    3/8" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8292530A31900000
    1/2" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8292530A32100000
    1/2" × 1/2"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A32200000
    5/8" × 5/8"Oversized0.000" to 0.005"0.000" to 0.005"Rockwell B8292530A32300000
    5/8" × 5/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8292530A32400000
     
    305 mm Long
    3 mm × 3 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B8298810A16900000
    3 mm × 3 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmNot RatedDIN 688090457A41000000
    4 mm × 4 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A1000000
    4 mm × 4 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmNot RatedDIN 688090457A42000000
    5 mm × 5 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A1100000
    5 mm × 5 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmNot RatedDIN 688090457A4300000
    6 mm × 6 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A12000000
    6 mm × 6 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmNot RatedDIN 688090457A44000000
    7 mm × 7 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A13000000
    7 mm × 7 mmUndersized-0.090 mm to 0.000 mm-0.090 mm to 0.000 mmRockwell B82DIN 17898810A81200000
    7 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17498810A14000000
    8 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A15000000
    8 mm × 8 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmNot RatedDIN 688090457A46000000
    8 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17498810A15200000
    8 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A15500000
    9 mm × 14 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17498810A16000000
    10 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A17000000
    10 mm × 10 mmUndersized-0.090 mm to 0.000 mm-0.090 mm to 0.000 mmRockwell B82DIN 17898810A33200000
    12 mm × 12 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A18000000
    14 mm × 14 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A20000000
    16 mm × 16 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A21000000
    18 mm × 18 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A22000000
    20 mm × 20 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A230000000
    22 mm × 22 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A240000000
    24 mm × 24 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmRockwell B82DIN 17898810A250000000
     
    304 Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    304 stainless steel key stock offers a good balance of strength, corrosion resistance, and machinability. 304 stainless steel key stock is more corrosion resistant than steel key stock.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B80DIN 688092288A601000000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B80DIN 688092288A60200000
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A60300000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A60400000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A60500000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B80DIN 688092288A60600000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B80DIN 688092288A60700000
     
    1,000 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B80DIN 688092288A60800000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B80DIN 688092288A61400000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B80DIN 688092288A61500000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B80DIN 688092288A60900000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B80DIN 688092288A61600000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B80DIN 688092288A61700000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A61000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A61800000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A61100000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B80DIN 688092288A61200000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B80DIN 688092288A613000000
     
    316 Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    316 stainless steel key stock has the best corrosion resistance of our stainless steel key stock and may be mildly magnetic. 316 stainless steel key stock is more corrosion resistant than steel key stock.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B85DIN 688092288A621000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 688092288A622000000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 688092288A623000000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B85DIN 688092288A624000000
     
    1,000 mm Long
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B85DIN 688092288A62800000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B85DIN 688092288A63700000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B85DIN 688092288A63800000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B85DIN 688092288A63900000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B85DIN 688092288A64000000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688092288A64100000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B85DIN 688092288A64200000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688092288A64300000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688092288A64400000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B85DIN 688092288A64500000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B85DIN 688092288A646000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688092288A64700000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B85DIN 688092288A648000000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B85DIN 688092288A649000000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B85DIN 688092288A650000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B85DIN 688092288A651000000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B85DIN 688092288A653000000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 688092288A654000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 688092288A630000000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 688092288A631000000
     
    316-316L Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    316-316L stainless steel key stock has the best corrosion resistance of our stainless steel key stock and may be mildly magnetic. 316-316L stainless steel key stock is more corrosion resistant than steel key stock.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    12" Long
    7/64" × 7/64"Oversized0.000" to 0.002"0.000" to 0.002"Not Rated98530A915000000
    7/64" × 7/64"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8698530A09900000
    1/8" × 1/8"Oversized0.000" to 0.002"0.000" to 0.002"Not Rated98530A6730000
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8698530A1000000
    1/8" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A10200000
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Not Rated98530A67700000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8698530A1770000
    3/16" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A11800000
    1/4" × 1/8"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A65600000
    1/4" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A66000000
    1/4" × 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Not Rated98530A63800000
    1/4" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A13600000
    1/4" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A13700000
    1/4" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A13800000
    1/4" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A49400000
    1/4" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A14000000
    5/16" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A74600000
    5/16" × 5/16"Oversized0.000" to 0.002"0.000" to 0.002"Not Rated98530A77800000
    5/16" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A15000000
    5/16" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A15100000
    3/8" × 1/4"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A69500000
    3/8" × 5/16"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A74200000
    3/8" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A73400000
    3/8" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A16500000
    3/8" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A59400000
    3/8" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A16700000
    1/2" × 1/2"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A49200000
    1/2" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A18700000
    1/2" × 3/4"Undersized-0.003" to 0.000"-0.004" to 0.000"Rockwell B8698530A19000000
    1/2" × 1"Undersized-0.003" to 0.000"-0.004" to 0.000"Rockwell B8698530A203000000
    5/8" × 5/8"Oversized0.000" to 0.004"0.000" to 0.004"Not Rated98530A79000000
    5/8" × 5/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8698530A20600000
    3/4" × 3/4"Oversized0.000" to 0.004"0.000" to 0.004"Not Rated98530A68700000
    3/4" × 3/4"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8698530A22600000
    7/8" × 7/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8698530A242000000
    1" × 1"Oversized0.000" to 0.004"0.000" to 0.004"Not Rated98530A427000000
    1" × 1"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8698530A229000000
     
    36" Long
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8698530A41200000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8698530A41000000
    1/4" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A41500000
    5/16" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A42000000
    3/8" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A42500000
    1/2" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8698530A430000000
    5/8" × 5/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8698530A434000000
    3/4" × 3/4"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8698530A442000000
    1" × 1"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8698530A446000000
     
    305 mm Long
    2 mm × 2 mmUndersized-0.025 mm to 0.000 mm-0.025 mm to 0.000 mmRockwell B86DIN 688090457A1000000
    3 mm × 3 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmNot Rated92288A1300000
    3 mm × 3 mmUndersized-0.025 mm to 0.000 mm-0.025 mm to 0.000 mmRockwell B86DIN 688090457A1100000
    4 mm × 4 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmNot Rated92288A15900000
    4 mm × 4 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B86DIN 688090457A1200000
    5 mm × 5 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B86DIN 688090457A1300000
    6 mm × 6 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmNot Rated92288A17200000
    6 mm × 6 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B86DIN 688090457A1400000
    7 mm × 7 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmNot Rated92288A22500000
    7 mm × 7 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B86DIN 688090457A15000000
    7 mm × 8 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmNot Rated92288A18300000
    7 mm × 8 mmUndersized-0.090 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B86DIN 688090457A15500000
    8 mm × 8 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B86DIN 688090457A16000000
    8 mm × 10 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B86DIN 688090457A16400000
    8 mm × 12 mmUndersized-0.036 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B86DIN 688090457A16500000
    9 mm × 14 mmUndersized-0.090 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B86DIN 688090457A16600000
    10 mm × 10 mmOversized0.000 mm to 0.076 mm0.000 mm to 0.076 mmNot Rated92288A11900000
    10 mm × 10 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B86DIN 688090457A17000000
    10 mm × 12 mmUndersized-0.036 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B86DIN 688090457A17500000
    10 mm × 16 mmUndersized-0.090 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B86DIN 688090457A17600000
    11 mm × 18 mmUndersized-0.090 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B86DIN 688090457A17700000
    12 mm × 12 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B86DIN 688090457A18000000
    12 mm × 20 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B86DIN 688090457A18500000
    14 mm × 14 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B86DIN 688090457A19000000
    14 mm × 22 mmUndersized-0.110 mm to 0.000 mm-0.052 mm to 0.000 mmRockwell B86DIN 688090457A19500000
    16 mm × 16 mmUndersized-0.043 mm to 0.000 mm-0.043 mm to 0.000 mmRockwell B86DIN 688090457A20000000
     
    416 Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    416 stainless steel key stock is stronger than other stainless key stock and can be heat treated for extra strength. It's corrosion resistant and magnetic. 416 stainless steel key stock is more corrosion resistant than steel key stock.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Not Rated99374A45300000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8699374A1000000
    1/4" × 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Not Rated99374A3440000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8699374A1100000
    5/16" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8699374A12000000
    3/8" × 3/8"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated99374A97700000
    3/8" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8699374A13000000
    1/2" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B8699374A14000000
    5/8" × 5/8"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8699374A15000000
    3/4" × 3/4"Undersized-0.004" to 0.000"-0.004" to 0.000"Rockwell B8699374A16000000
     
    400 Nickel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    400 nickel key stock is the most corrosion resistant key stock in our offering and can be used in highly corrosive environments, such as those involving salt water, sulfuric acid, and alkalies. For complete corrosion resistance, 400 nickel keys are typically used with 400 nickel machine parts. Comparable to Monel, 400 nickel is also known for its strength and weldability.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N19000000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N1300000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N1100000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N15000000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N17000000
     
    36" Long
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N21000000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N1400000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N12000000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N16000000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N18000000
     
    360 Brass
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    360 brass key stock is corrosion resistant and nonmagnetic. 360 brass is softer than other metals, so it's often used for shear keys.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    12" Long
    1/8" × 1/8"Standard-0.003" to 0.003"-0.003" to 0.003"Rockwell B3598500A10000000
    5/32" × 5/32"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A3600000
    3/16" × 3/16"Standard-0.003" to 0.003"-0.003" to 0.003"Rockwell B3598500A1170000
    1/4" × 1/4"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A1360000
    5/16" × 5/16"Standard-0.003" to 0.003"-0.003" to 0.003"Rockwell B3598500A1500000
    3/8" × 3/8"Standard-0.003" to 0.003"-0.003" to 0.003"Rockwell B3598500A16500000
    7/16" × 7/16"Standard-0.003" to 0.003"-0.003" to 0.003"Rockwell B3598500A17900000
    1/2" × 1/2"Standard-0.003" to 0.003"-0.003" to 0.003"Rockwell B3598500A18700000
    5/8" × 5/8"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A20600000
    3/4" × 3/4"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A22600000
    7/8" × 7/8"Standard-0.005" to 0.005"-0.005" to 0.005"Rockwell B3598500A45000000
    1" × 1"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A25700000
    1 1/4" × 1 1/4"Standard-0.005" to 0.005"-0.005" to 0.005"Rockwell B3598500A274000000
     
    36" Long
    1/8" × 1/8"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A1010000
    3/16" × 3/16"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A11800000
    1/4" × 1/4"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A13700000
    5/16" × 5/16"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A15100000
    3/8" × 3/8"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A16600000
    1/2" × 1/2"Standard-0.004" to 0.004"-0.004" to 0.004"Rockwell B3598500A18800000
     
    305 mm Long
    3 mm × 3 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B35DIN 688090457A71000000
    4 mm × 4 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B35DIN 688090457A72000000
    5 mm × 5 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B35DIN 688090457A73000000
    6 mm × 6 mmUndersized-0.030 mm to 0.000 mm-0.030 mm to 0.000 mmRockwell B35DIN 688090457A74000000
    8 mm × 8 mmUndersized-0.036 mm to 0.000 mm-0.036 mm to 0.000 mmRockwell B35DIN 688090457A76000000
     
    6061 Aluminum
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    6061 aluminum key stock is one-third the weight of steel key stock, but not as strong. It resists corrosion and is nonmagnetic.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    1/8" × 1/8"Standard-0.008" to 0.008"-0.008" to 0.008"Not Rated99108A050000000
    3/16" × 3/16"Standard-0.008" to 0.008"-0.008" to 0.008"Not Rated99108A08000000
    1/4" × 1/4"Standard-0.008" to 0.008"-0.008" to 0.008"Not Rated99108A1000000
    5/16" × 5/16"Standard-0.008" to 0.008"-0.008" to 0.008"Not Rated99108A10500000
    3/8" × 3/8"Standard-0.008" to 0.008"-0.008" to 0.008"Not Rated99108A1100000
    1/2" × 1/2"Standard-0.009" to 0.009"-0.009" to 0.009"Not Rated99108A12000000
    5/8" × 5/8"Standard-0.009" to 0.009"-0.009" to 0.009"Not Rated99108A13000000
     
    Acetal
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    Acetal key stock is slippery and wear resistant. Acetal resists swelling when exposed to moisture.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    3/16" × 3/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 85D94446A110000000
    1/4" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 85D94446A34100000
     
    Nylon 6/6
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    Nylon 6/6 key stock is slippery and wear resistant.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    3/16" × 3/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 80D94446A709000000
    1/4" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 80D94446A77100000
    5/16" × 5/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 80D94446A88000000
    3/8" × 3/8"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 80D94446A92100000
    1/2" × 1/2"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 80D94446A94600000
     
    PEEK
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    PEEK key stock resists chemicals, moisture, and high temperatures. It meets MIL-P-46183 Type 1 military specifications for nonreinforced plastic.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Mil. Spec.
    Each
    12" Long
    3/16" × 3/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 85DMIL-P-46183 Type 194446A591000000
    1/4" × 1/4"Undersized-0.003" to 0.000"-0.003" to 0.000"Durometer 85DMIL-P-46183 Type 194446A59400000
     
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