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    90 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 × 12 mm
    25Undersized-0.090 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    30Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688550000000000000
    36Undersized-0.090 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    40Undersized-0.090 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    45Undersized-0.090 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    50Undersized-0.090 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    56Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    60Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    63Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    65Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    68Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    70Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    80Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    100Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    110Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
     
    316 Stainless Steel
     
    8 mm × 12 mm
    20Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 68851000000000000
    28Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 68851000000000000
    32Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 68851000000000000
    35Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    36Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    40Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    45Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    55Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    60Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    75Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    80Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    85Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    90Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    100Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    110Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    125Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    140Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    200Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
     

    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 × 12 mm
    25Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 68855000000000000000
    30Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    36Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    40Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    50Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    56Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    60Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    63Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    80Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    100Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885500000000000000
    110Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
     
    316 Stainless Steel
     
    8 mm × 12 mm
    20Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    22Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    36Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    50Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 688510000000000000
    70Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885100000000000000
    80Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885100000000000000
    110Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885100000000000000
    130Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885100000000000000
    140Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885100000000000000
    150Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885100000000000000
    200Undersized-0.036 to 0.000-0.043 to 0.000Not RatedDIN 6885100000000000000
     

    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 × 12 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    8 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B87—00000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 68800000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B87—00000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
     
    1,000 mm Long
    6 mm × 12 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
     
    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 × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B87000000000000000
    8 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B870000000000000
    10 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B8700000000000000
    12 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B8700000000000000
     
    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 × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
     
    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
    12 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B90—000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
     
    1,000 mm Long
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
     
    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.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    8 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B82DIN 178000000000000000
    12 mm × 12 mmOversized0.000 to 0.0760.000 to 0.076Rockwell B82DIN 17800000000000000
     
    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
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B80DIN 6880000000000000000
     
    1,000 mm Long
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B80DIN 688000000000000000
     
    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 × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
     
    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
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B86DIN 6880000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
     

    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 × 12 mm
    25Undersized-0.036 to 0.000-0.043 to 0.000Not RatedM4 × 0.7 mmDIN 688500000000000000
    40Undersized-0.036 to 0.000-0.043 to 0.000Not RatedM4 × 0.7 mmDIN 68850000000000000
    50Undersized-0.036 to 0.000-0.043 to 0.000Not RatedM4 × 0.7 mmDIN 68850000000000000
    56Undersized-0.036 to 0.000-0.043 to 0.000Not RatedM4 × 0.7 mmDIN 68850000000000000
     

    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
    1220128-0.011 to 0M5
    		No0000000000000
     
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