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    124 Products

    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.
    Zinc-Plated 1008-1045 Carbon Steel— Zinc-plated steel keys resist corrosion in wet environments.
    18-8 Stainless Steel—18-8 stainless steel keys offer a balance of strength and corrosion resistance. They may be mildly magnetic.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized keys fit tightly in a keyway. Press them 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 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.
    ASME B17.1 Class 1 and ASME B17.1 Class 2—Keys that meet ASME B17.1 specifications conform to ASME standards for dimensions and tolerances.
    Tolerance
    Lg.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    1008-1045 Carbon Steel
     
    3/16" × 3/16"
    1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97ASME B17.1 Class 11098870A11800000
    1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—1098870A3200000
    1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1200000
    3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—1098870A3300000
    3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1300000
    7/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97ASME B17.1 Class 11098870A1350000
    1"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—1098870A3400000
    1"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1400000
    1 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97ASME B17.1 Class 11098870A1450000
    1 1/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—1098870A3550000
    1 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1500000
    1 3/8"Oversized0.000" to 0.001"0.000" to 0.001"Not RatedASME B17.1 Class 2598870A3220000
    1 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1598870A3210000
    1 1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—1098870A3650000
    1 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1600000
    1 3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—1098870A37000000
    1 3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1700000
    2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—1098870A37500000
    2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1800000
    2 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 11098870A1900000
    3"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97ASME B17.1 Class 11098870A1920000
    4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97ASME B17.1 Class 11098870A19300000
     
    Zinc-Plated 1008-1045 Carbon Steel
     
    3/16" × 3/16"
    1 3/8"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50ASME B17.1 Class 2104732N1200000
    1 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 1104732N1100000
     
    18-8 Stainless Steel
     
    3/16" × 3/16"
    1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—1092624A11800000
    1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—1092624A12000000
    3/4"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B82—1092624A4070000
    3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—1092624A13000000
    7/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—1092624A13500000
    1"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B82—1092624A4040000
    1"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—1092624A14000000
    1 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—1092624A14500000
    1 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—1092624A15000000
    1 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—592624A1600000
    1 3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—592624A1700000
    2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—592624A1800000
    2 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B97—592624A1900000
     

    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.
    Zinc-Plated 1008-1045 Carbon Steel— Zinc-plated steel keys resist corrosion in wet environments.
    Oversized Tolerance—Slightly larger than the size listed in the table, oversized keys fit tightly in a keyway. Press them 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 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.
    ASME B17.1 Class 1 and ASME B17.1 Class 2—Keys that meet ASME B17.1 specifications conform to ASME standards for dimensions and tolerances.
    Tolerance
    Lg.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs. Met
    Pkg.
    Qty.
    Pkg.
    1008-1045 Carbon Steel
     
    3/16" × 3/16"
    1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—598870A56000000
    1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1598870A6960000
    3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—598870A5700000
    3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 1598870A9660000
    1"Oversized0.000" to 0.001"0.000" to 0.001"Not RatedASME B17.1 Class 2598870A3570000
    1"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 1598870A3260000
    1 1/4"Oversized0.000" to 0.001"0.000" to 0.001"Not RatedASME B17.1 Class 2598870A4210000
    1 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1598870A5370000
    1 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1598870A5280000
    1 1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50—598870A5750000
    1 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B50ASME B17.1 Class 1598870A17900000
    2"Oversized0.000" to 0.001"0.000" to 0.001"Not RatedASME B17.1 Class 2598870A4860000
    2"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1598870A8850000
     
    Zinc-Plated 1008-1045 Carbon Steel
     
    3/16" × 3/16"
    1/2"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50ASME B17.1 Class 2595053A3130000
    1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1595053A1510000
    3/4"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B50ASME B17.1 Class 2595053A9340000
    3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1595053A1520000
    1"Oversized0.000" to 0.001"0.000" to 0.001"Not RatedASME B17.1 Class 2595053A31400000
    1"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1595053A3010000
    1 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1595053A3430000
    1 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1595053A3660000
    1 3/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1595053A4670000
    2"Undersized-0.002" to 0.000"-0.002" to 0.000"Not RatedASME B17.1 Class 1595053A4710000
     

    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 and 8630 Alloy Steel—Steel keys offer good strength.
    316 Stainless Steel—316 stainless steel keys have excellent corrosion resistance, but aren't as strong as steel keys. They may be mildly magnetic.
    Inch—Inch keys conform to ASME B17.2 standards for dimensions and tolerances.
    Tolerance
    Woodruff
    Key No.
    Wd.
    For Keyway
    Dia.
    Ht.
    Lg.
    Wd.
    Ht.
    Specs.
    Met
    System of
    Measurement
    Pkg.
    Qty.
    Pkg.
    1018-1045 Carbon Steel
    93/16"3/4"0.303"0.74"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch10098481A125000000
    113/16"7/8"0.365"0.866"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch5098481A14000000
    133/16"1"0.428"0.992"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch2598481A16000000
    163/16"1 1/8"0.475"1.114"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch2598481A19500000
    193/16"1 1/4"0.537"1.24"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch2598481A22000000
    613/16"5/8"0.24"0.612"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch10098481A11000000
    1263/16"2 1/8"0.396"1.38"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch2598481A22700000
     
    8630 Alloy Steel
    93/16"3/4"0.303"0.74"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch5098525A12500000
    113/16"7/8"0.365"0.866"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch2598525A14000000
    133/16"1"0.428"0.992"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch2598525A16000000
    163/16"1 1/8"0.475"1.114"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch1098525A1950000
    193/16"1 1/4"0.537"1.24"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch1098525A22000000
    613/16"5/8"0.24"0.612"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch5098525A11000000
    1263/16"2 1/8"0.396"1.38"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch2598525A22700000
     
    316 Stainless Steel
    93/16"3/4"0.303"0.74"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch597940A12500000
    113/16"7/8"0.365"0.866"0.000" to 0.001"-0.006" to 0.000"ASME B17.2Inch197940A1400000
    613/16"5/8"0.25"0.612"0.000" to 0.001"-0.005" to 0.000"ASME B17.2Inch597940A11000000
     

    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.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    1/8" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098830A51600000
    1/8" × 3/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098830A5170000
    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
     
    36" Long
    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
     
    72" Long
    3/16" × 3/16"Oversized0.000" to 0.002"0.000" to 0.002"Rockwell B5098830A5400000
     
    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.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    1/8" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B5098491A10100000
    1/8" × 3/16"Undersized-0.003" to 0.000"-0.003" to 0.000"Rockwell B5098510A1150000
    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
     
    36" Long
    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
     
    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
    1/8" × 3/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A132000000
    3/16" × 3/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A1400000
     
    36" Long
    3/16" × 3/16"Standard-0.001" to 0.001"-0.001" to 0.001"Rockwell B9098535A44000000
     
    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
    3/16" × 3/16"Oversized0.000" to 0.001"0.000" to 0.001"Rockwell B50ASME B17.1 Class 299020A42000000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Not Rated—99020A8060000
     
    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
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    3/16" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Rockwell B8298493A11700000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A1170000
     
    36" Long
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8292530A31300000
     
    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.
    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 Rated98530A677000000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8698530A1770000
    1/4" × 3/16"Oversized0.000" to 0.003"0.000" to 0.003"Not Rated98530A66000000
     
    36" Long
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B8698530A41000000
     
    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
     
    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
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N13000000
     
    36" Long
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N1400000
     
    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.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    3/16" × 3/16"Standard-0.0035" to 0.0035"-0.0035" to 0.0035"Rockwell B3598500A11700000
     
    36" Long
    3/16" × 3/16"Standard-0.0035" to 0.0035"-0.0035" to 0.0035"Rockwell B3598500A11800000
     
    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
    3/16" × 3/16"Standard-0.008" to 0.008"-0.008" to 0.008"Not Rated99108A080000000
     
    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
     
    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
     
    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
     

    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.
    Oversized Tolerance—Oversized keys create a tight fit. They conform to ASME B17.1 Class 2 standards for dimensions and tolerances.
    Tolerance
    Lg.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Thread
    Size
    Specs. Met
    Each
    1018-1045 Carbon Steel
     
    3/16" × 3/16"
    1/2"Oversized0.000" to 0.001"0.000" to 0.001"Not Rated4-40
    		ASME B17.1 Class 290164A23100000
    3/4"Oversized0.000" to 0.001"0.000" to 0.001"Not Rated4-40
    		ASME B17.1 Class 290164A3140000
    1"Oversized0.000" to 0.001"0.000" to 0.001"Not Rated4-40
    		ASME B17.1 Class 290164A3150000
    1 1/2"Oversized0.000" to 0.001"0.000" to 0.001"Not Rated4-40
    		ASME B17.1 Class 290164A4070000
    1 3/4"Oversized0.000" to 0.001"0.000" to 0.001"Not Rated4-40
    		ASME B17.1 Class 290164A4810000
    2"Oversized0.000" to 0.001"0.000" to 0.001"Not Rated4-40
    		ASME B17.1 Class 290164A5690000
     

    High-Profile Woodruff Keys

    Image of Attribute. Front orientation. Contains Annotated. High-Profile Woodruff Keys.
    Image of Attribute. Side View. Front orientation. Contains Annotated. High-Profile Woodruff Keys.

    Side View

    Feet prevent these keys from rocking in the keyseat, making it easier to install gears and other components. 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. Because they're usually shorter than standard machine keys, they work best in light duty applications. Keys are made of steel. Also known as hi-pro keys.
    Tolerance
    Woodruff
    Key No.
    Wd.
    Ht.
    For Keyway
    Dia.
    Lg.
    Wd.
    Ht.
    Feet
    Ht.
    Pkg.
    Qty.
    Pkg.
    1018-1045 Carbon Steel
    93/16"0.303"3/4"0.781"0.000" to 0.001"0.000" to 0.006"0.057"590049A41800000
    113/16"0.365"7/8"0.938"0.000" to 0.001"0.000" to 0.006"0.086"590049A8290000
    613/16"0.24"5/8"0.656"0.000" to 0.001"0.000" to 0.006"0.086"590049A7330000
     

    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.
    Inch—The height of inch keys decreases by 1/8" for every 12" of length. They conform to ASME B17.1 Class 1 standards for dimensions and tolerances.
    Tolerance
    Head
    Lg.
    Ht.
    Wd.
    Ht.
    Lg.
    End
    Ht.
    Rate of
    Taper
    Specs. Met
    System of
    Measurement
    Each
    1018-1045 Carbon Steel
     
    3/16" × 3/16"
    1 1/2"-0.002" to 0.000"-0.002" to 0.000"5/16"9/32"0.174"1:96ASME B17.1 Class 1Inch98471A11700000
    2"-0.002" to 0.000"-0.002" to 0.000"5/16"9/32"0.169"1:96ASME B17.1 Class 1Inch98471A1180000
    3"-0.002" to 0.000"-0.002" to 0.000"5/16"9/32"0.158"1:96ASME B17.1 Class 1Inch98471A1200000
     
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