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    97 Products

    Rounded Machine Keys

    Image of Product. Front orientation. Machine Keys. Rounded Machine Keys.
    When installed, these keys fill oval keyways completely, reducing stress on the key and shaft. Using them in a closed keyway keeps them from sliding along the shaft axis. The rounded ends make it easy to slide gears, hubs, and other components into place. These are also known as feather keys. 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—Steel keys are strong and easy to machine. Since steel is the most common material, these keys work in many applications. Steel keys rust when exposed to moisture, so they should only be used in dry environments.
    316 Stainless Steel—316 stainless steel keys have excellent corrosion resistance, but aren't as strong as steel keys. They may be mildly magnetic.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized keys are the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use them when parts need to be taken apart frequently, such as for maintenance or prototyping. Undersized metric keys meet DIN 6885 dimensional standards.
    Tolerance,
    mm
    Lg.,
    mm
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    1008-1045 Carbon Steel
     
    8 mm × 10 mm
    20Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A54300000
    22Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A6050000
    25Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A6150000
    28Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A6220000
    30Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A7060000
    32Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A7350000
    36Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A7420000
    38Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A4590000
    40Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A8270000
    45Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A83100000
    48Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A46100000
    50Undersized-0.090 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A84000000
    55Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A47000000
    56Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A47900000
    60Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A48300000
    63Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A48700000
    70Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A49300000
    80Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A50800000
    90Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A52200000
    100Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A52600000
    110Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885596717A53700000
     
    316 Stainless Steel
     
    8 mm × 10 mm
    16Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N1430000
    25Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N1460000
    28Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N1470000
    30Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N1480000
    35Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N1510000
    36Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N1520000
    40Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N1530000
    45Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N15400000
    50Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N15500000
    56Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N15700000
    60Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N15800000
    70Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N16200000
    75Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N16300000
    80Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N16400000
    100Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N16700000
    110Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N16800000
    125Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688512977N17100000
     

    Machine Keys

    Image of Product. Front orientation. Machine Keys. Machine Keys.
    Straight keys, with a square or rectangular cross section, are the most common type of key. Install them in keyways to transmit torque from shafts to gears and other components. 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—Steel keys are strong and easy to machine. Since steel is the most common material, these keys work in many applications. Steel keys rust when exposed to moisture, so they should only be used in dry environments.
    Undersized Tolerance—Slightly smaller than the size listed in the table, undersized keys are the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use them when parts need to be taken apart frequently, such as for maintenance or prototyping.
    Tolerance,
    mm
    Lg.,
    mm
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    1008-1045 Carbon Steel
     
    8 mm × 10 mm
    20Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A78200000
    25Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A7840000
    30Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A7860000
    32Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A7870000
    36Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A7880000
    40Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A7910000
    45Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A7920000
    48Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A79300000
    50Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A79400000
    55Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A79500000
    60Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A79700000
    63Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A79800000
    70Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A79900000
    80Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A80100000
    100Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A80300000
    110Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885598870A80400000
     
    316 Stainless Steel
     
    8 mm × 10 mm
    45Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885198870A6300000
    50Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885198870A6340000
    55Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885198870A6350000
    56Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885198870A6360000
    70Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885198870A64800000
    90Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885198870A66000000
    125Undersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 6885198870A67200000
     

    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,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    6 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B87—92288A259000000
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A5210000
    8 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B87—92288A2620000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688092288A7500000
    10 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B87—92288A25300000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A7650000
     
    1,000 mm Long
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A55600000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A57100000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A57400000
     
    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.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    305 mm Long
    6 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B8792288A145000000
    8 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B8792288A2400000
    10 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B8792288A29000000
     
    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
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A69000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688092288A67900000
     
    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.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    8 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B82DIN 17498810A152000000
    10 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B82DIN 17898810A17000000
    10 mm × 10 mmUndersized-0.090 to 0.000-0.090 to 0.000Rockwell B82DIN 17898810A33200000
     
    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
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A603000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A60500000
     
    1,000 mm Long
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688092288A61100000
     
    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
    1,000 mm Long
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688092288A644000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688092288A64700000
     
    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,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A164000000
    10 mm × 10 mmOversized0.000 to 0.0760.000 to 0.076Not Rated—92288A11900000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688090457A17000000
     

    Tapped Rounded Machine Keys

    Image of Product. Front orientation. Machine Keys. Tapped Rounded Machine Keys.
    Thread a screw through the tapped hole to pop these keys out of a keyway. When installed, they fill oval keyways completely, reducing stress on the key and shaft. Using them in a closed keyway keeps them from sliding along the shaft axis. The rounded ends make it easy to slide gears, hubs, and other components into place. To install, press them in to place. Use them for permanent or high-torque applications, or to replace a key in a worn keyway. Keys are made of steel.
    Undersized Tolerance—Undersized keys are good when you need a slightly looser fit or when you have an inconsistent keyway. Use them with parts you take apart frequently, such as for maintenance or prototyping. They meet DIN 6885 dimensional standards for undersized keys.
    Tolerance,
    mm
    Lg.,
    mm
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Thread
    Size
    Specs.
    Met
    Each
    1018-1045 Carbon Steel
     
    8 mm × 10 mm
    20Undersized-0.036 to 0.000-0.036 to 0.000Not RatedM3 × 0.5 mmDIN 688590164A13700000
    30Undersized-0.036 to 0.000-0.036 to 0.000Not RatedM3 × 0.5 mmDIN 688590164A1420000
    36Undersized-0.036 to 0.000-0.036 to 0.000Not RatedM3 × 0.5 mmDIN 688590164A1440000
    40Undersized-0.036 to 0.000-0.036 to 0.000Not RatedM3 × 0.5 mmDIN 688590164A1460000
    50Undersized-0.036 to 0.000-0.036 to 0.000Not RatedM3 × 0.5 mmDIN 688590164A1490000
    56Undersized-0.036 to 0.000-0.036 to 0.000Not RatedM3 × 0.5 mmDIN 688590164A1510000
     

    Woodruff Keys

    Image of Product. Front orientation. Contains Annotated. Machine Keys. Woodruff Keys.
    Image of Attribute. Side View. Front orientation. Contains Annotated. Woodruff Keys.

    Side View

    Woodruff keys work well near shaft shoulders, where a standard open keyway would create too much stress. They are also often used on tapered shafts. These keys have a rounded shape that makes them easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. Because they're usually shorter than standard machine keys, they work best in light duty applications. Use them to connect gears and other components to shafts. Also known as half moon keys.
    1018-1045 Carbon Steel—Steel keys offer good strength.
    Metric—Metric keys conform to DIN 6888 standards.
    Wd.,
    mm
    For Keyway
    Dia., mm
    Ht.,
    mm
    Lg.,
    mm
    Wd. Tolerance,
    mm
    Specs.
    Met
    System of
    Measurement
    Pkg.
    Qty.
    Pkg.
    1018-1045 Carbon Steel
    10281127.35-0.030 to 0.000DIN 6888Metric598490A315000000
    10321331.4-0.036 to 0.000DIN 6888Metric598490A32000000
    10451643.1-0.036 to 0.000DIN 6888Metric598490A33000000
     

    Tapered Gib Keys

    Image of Attribute. Front orientation. Contains Annotated. Tapered Gib Keys.
    These keys have a tapered body that wedges in to the keyway for a more secure fit than standard machine keys. The gib head makes these keys easy to remove when parts need to be taken apart frequently, such as for maintenance or prototyping. Keys are tapered along their length. Use them to connect gears and other components with tapered keyways to shafts. Keys are made of steel.
    Metric—The height of metric keys decreases by 1 mm for every 100 mm of length. They meet DIN 6887, an international standard for machine keys.
    Tolerance,
    mm
    Head,
    mm
    Lg.,
    mm
    Ht.
    Wd.
    Ht.
    Lg.
    End Ht.,
    mm
    Rate of
    Taper
    Specs.
    Met
    System of
    Measurement
    Each
    1018-1045 Carbon Steel
     
    8 mm × 10 mm
    600.000 to 0.200-0.036 to 0.00012107.4801:100DIN 6887Metric98471A207000000
     

    Fixture Keys

    Image of ProductInUse. Front orientation. Contains Annotated. Fixture Keys. Fixture Keys.
    Image of Product. Front orientation. Contains Annotated. Fixture Keys. Fixture Keys, Rectangle.

    Rectangle

    Sized to fit with precision in machine table T-slots, use these keys to locate fixtures and vises on your machine table. They mount to the underside of your fixture or vise with a socket head cap screw.
    For Machine Table
    T-Slot Wd., mm
    Lg.,
    mm
    Wd.,
    mm
    Ht.,
    mm
    Wd. Tolerance,
    mm
    For Mounting
    Screw Size
    Mounting Fasteners
    Included
    Each
    Rectangle
     
    Steel
    1020108-0.009 to 0M4
    		No8961A71000000
     
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