McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    186 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.
    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 B87DIN 688092288A71000000
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B87DIN 688092288A7150000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A5170000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A7200000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A5180000
    4 mm × 7 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A5190000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A7250000
    5 mm × 8 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A5200000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A7300000
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A5210000
    6 mm × 12 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A5220000
    6 mm × 14 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A5230000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A7350000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A7400000
    7 mm × 18 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A52500000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A7550000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A7500000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A7450000
    8 mm × 20 mmUndersized-0.090 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A52600000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A7600000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A7650000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A22900000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A52800000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A52900000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A53000000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A53100000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A53200000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A53300000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A53400000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A53500000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A53600000
    18 mm × 18 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A53700000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A53800000
    20 mm × 20 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A53900000
    20 mm × 36 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A54000000
    22 mm × 22 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A54100000
    22 mm × 40 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A54200000
    25 mm × 45 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A54400000
    28 mm × 50 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A54500000
     
    1,000 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B87DIN 688092288A5630000
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B87DIN 688092288A5640000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A55200000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A5650000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A55300000
    4 mm × 7 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A55400000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A5660000
    5 mm × 8 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A55500000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688092288A56700000
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A55600000
    6 mm × 12 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A55700000
    6 mm × 14 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A55800000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A56800000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A56900000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A57000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A57100000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A57200000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A57300000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A57400000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A25200000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A57500000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A57600000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A57700000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A57800000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A57900000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A58000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A581000000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A58200000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A583000000
    18 mm × 18 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A58400000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A585000000
    20 mm × 20 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A58600000
    20 mm × 36 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A587000000
    22 mm × 22 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688092288A588000000
    22 mm × 40 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688092288A589000000
    25 mm × 45 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell 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.
    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
    18 mm × 18 mmUndersized-0.043 to 0.000-0.043 to 0.000Not RatedDIN 688092288A238000000
     
    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
     
    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.
    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 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
    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 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 × 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 688092288A674000000
     
    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.
    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
    3 mm × 3 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 688090457A41000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 688090457A4200000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 688090457A4300000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 688090457A44000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688090457A46000000
     
    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.
    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 B86DIN 688090457A10000000
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B86DIN 688090457A1100000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B86DIN 688090457A1200000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B86DIN 688090457A1300000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B86DIN 688090457A1400000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A15000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A15500000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A16000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A16400000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B86DIN 688090457A16500000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A16600000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A17000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B86DIN 688090457A17500000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B86DIN 688090457A17600000
    11 mm × 18 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B86DIN 688090457A17700000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B86DIN 688090457A18000000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B86DIN 688090457A18500000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B86DIN 688090457A19000000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B86DIN 688090457A19500000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B86DIN 688090457A20000000
     
    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,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    3 mm × 3 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 688090457A710000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 688090457A72000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 688090457A73000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 688090457A74000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B35DIN 688090457A76000000
     
    back to top