Products > Power Transmission Hardware > Machine Keys > Undersize Machine Keys

Undersize Machine Keys

Undersize machine keys are cut from key stock to lengths under 12 inches long. Undersize indicates that the key is either at or slightly smaller than a specified size while remaining within the tolerance range. Just as with other machine keys, undersize machine keys hold machinery parts in place or align components and normally fit without the need to file. They are specifically designed to fail as a safety mechanism to save more expensive components. Standard sizes are ready to use without any cutting or filing.

  • Available in Carbon Steel, and Stainless Steel
  • Offered in corrosion resistant Zinc Clear finish
  • Undersize machine keys are relatively free fitting
  • Visit our Product FAQs to learn more about Key Stock & Machine Keys
Undersize Machine Keys

Search within Undersize Machine Keys

G.L. Huyett has acquired AZ Lifting Hardware
Filter By
  • MAK-A-KEY
  • Carbon Steel
  • Stainless Steel
  • Plain
  • Zinc Clear Trivalent
  • None
  • Inch
  • Metric
  • 1" x 1"
  • 1" x 1-1/2"
  • 1" x 1-1/4"
  • 1" x 1-1/8"
  • 1" x 1-3/4"
  • 1" x 2"
  • 1-1/16" x 1-1/4"
  • 1-1/2" x 1-1/2"
  • 1-1/2" x 1-3/4"
  • 1-1/2" x 2"
  • 1-1/4" x 1-1/2"
  • 1-1/4" x 1-1/4"
  • 1-1/4" x 1-3/4"
  • 1-1/4" x 1/8"
  • 1-1/4" x 2"
  • 1-1/8" x 1-1/2"
  • 1-1/8" x 1-1/4"
  • 1-1/8" x 1-1/8"
  • 1-3/16" x 1-1/4"
  • 1-3/4" x 1-3/4"
  • 1-3/4" x 2-1/2"
  • 1-3/8" x 1-3/8"
  • 1-5/8" x 1-5/8"
  • 1-7/8" x 1-7/8"
  • 1-7/8" x 2-1/4"
  • 1/16" x 1/16"
  • 1/2" x 1"
  • 1/2" x 1-1/2"
  • 1/2" x 1-1/4"
  • 1/2" x 1/2"
  • 1/2" x 3/4"
  • 1/2" x 5/8"
  • 1/2" x 7/8"
  • 1/2" x 9/16"
  • 1/4" x 1"
  • 1/4" x 1-1/2"
  • 1/4" x 1-1/4"
  • 1/4" x 1/2"
  • 1/4" x 1/4"
  • 1/4" x 3/4"
  • 1/4" x 3/8"
  • 1/4" x 5/16"
  • 1/4" x 5/8"
  • 1/4" x 7/16"
  • 1/4" x 7/8"
  • 1/8" x 1"
  • 1/8" x 1-1/2"
  • 1/8" x 1/2"
  • 1/8" x 1/4"
  • 1/8" x 1/8"
  • 1/8" x 3/16"
  • 1/8" x 3/8"
  • 1/8" x 5/32"
  • 11/16" x 1"
  • 11/16" x 11/16"
  • 11/16" x 3/4"
  • 11/16" x 7/8"
  • 13/16" x 13/16"
  • 13/32" x 3/4"
  • 15/16" x 15/16"
  • 17/32" x 5/8"
  • 19/32" x 5/8"
  • 2" x 2"
  • 2" x 3"
  • 2-1/4" x 2-1/4"
  • 3/16" x 1/2"
  • 3/16" x 1/4"
  • 3/16" x 3/16"
  • 3/16" x 3/4"
  • 3/16" x 3/8"
  • 3/16" x 5/16"
  • 3/16" x 5/8"
  • 3/32" x 1/8"
  • 3/32" x 3/16"
  • 3/32" x 3/32"
  • 3/4" x 1"
  • 3/4" x 1-1/2"
  • 3/4" x 1-1/4"
  • 3/4" x 1-1/8"
  • 3/4" x 1-3/4"
  • 3/4" x 2"
  • 3/4" x 3/4"
  • 3/4" x 7/8"
  • 3/8" x 1"
  • 3/8" x 1/2"
  • 3/8" x 27/64"
  • 3/8" x 3/4"
  • 3/8" x 3/8"
  • 3/8" x 5/8"
  • 3/8" x 7/16"
  • 3/8" x 7/8"
  • 5/16" x 1/2"
  • 5/16" x 25/64"
  • 5/16" x 3/4"
  • 5/16" x 3/8"
  • 5/16" x 5/16"
  • 5/16" x 5/8"
  • 5/16" x 7/16"
  • 5/32" x 3/16"
  • 5/32" x 5/16"
  • 5/32" x 5/32"
  • 5/8" x 1"
  • 5/8" x 1-1/4"
  • 5/8" x 3/4"
  • 5/8" x 5/8"
  • 5/8" x 7/8"
  • 7/16" x 1/2"
  • 7/16" x 3/4"
  • 7/16" x 5/8"
  • 7/16" x 7/16"
  • 7/32" x 1/2"
  • 7/32" x 1/4"
  • 7/32" x 3/8"
  • 7/32" x 5/16"
  • 7/32" x 5/8"
  • 7/32" x 7/32"
  • 7/8" x 1"
  • 7/8" x 1-1/2"
  • 7/8" x 1-1/4"
  • 7/8" x 7/8"
  • 9/16" x 3/4"
  • 9/16" x 5/8"
  • 9/16" x 7/8"
  • 9/16" x 9/16"
  • 9/32" x 5/16"
  • M10 x 10
  • M10 x 6
  • M10 x 7
  • M10 x 8
  • M11 x 11
  • M12 x 10
  • M12 x 12
  • M12 x 6
  • M12 x 7
  • M12 x 8
  • M12 x 9
  • M13 x 10
  • M13 x 11
  • M14 x 10
  • M14 x 14
  • M14 x 6
  • M14 x 8
  • M14 x 9
  • M15 x 10
  • M15 x 12
  • M15 x 8
  • M16 x 10
  • M16 x 11
  • M16 x 12
  • M16 x 16
  • M16 x 7
  • M16 x 8
  • M16 x 9
  • M18 x 11
  • M18 x 12
  • M18 x 14
  • M18 x 18
  • M18 x 7
  • M18 x 9
  • M19 x 19
  • M2 x 2
  • M20 x 12
  • M20 x 13
  • M20 x 14
  • M20 x 15
  • M20 x 16
  • M20 x 20
  • M20 x 8
  • M22 x 14
  • M22 x 20
  • M22 x 22
  • M22 x 9
  • M24 x 14
  • M24 x 16
  • M25 x 14
  • M25 x 25
  • M25 x 9
  • M26 x 26
  • M28 x 10
  • M28 x 16
  • M28 x 25
  • M28 x 28
  • M3 x 3
  • M30 x 20
  • M32 x 18
  • M36 x 20
  • M4 x 3
  • M4 x 4
  • M40 x 10
  • M40 x 20
  • M40 x 22
  • M45 x 25
  • M5 x 3
  • M5 x 4
  • M5 x 5
  • M50 x 25
  • M50 x 28
  • M6 x 4
  • M6 x 5
  • M6 x 6
  • M7 x 7
  • M8 x 5
  • M8 x 6
  • M8 x 7
  • M8 x 8
  • M9 x 4
  • M9 x 6
  • M9 x 8
  • M9 x 9
  • 1-13/16"
  • 1-5/16"
  • 1-7/16"
  • 1/2"
  • 15/16"
  • 2-13/16"
  • 2-5/16"
  • 3-13/16"
  • 3-5/16"
  • 4-3/4"
  • 5-3/4"
  • 5/8"
  • 6-3/4"
  • 7-3/4"
  • 9/16"
  • .0625" (1/16)
  • .0937" (3/32)
  • .1250" (1/8)
  • .1562" (5/32)
  • .1875" (3/16)
  • .2187" (7/32)
  • .2360"
  • .2500" (1/4)
  • .2812" (9/32)
  • .3020"
  • .3080"
  • .3125" (5/16)
  • .3200"
  • .3750" (3/8)
  • .4062" (13/32)
  • .4375" (7/16)
  • .4710"
  • .5000" (1/2)
  • .5300"
  • .5625" (9/16)
  • .5937" (19/32)
  • .6250" (5/8)
  • .6875" (11/16)
  • .7500" (3/4)
  • .8125" (13/16)
  • .8750" (7/8)
  • .9375" (15/16)
  • 1.0000" (1)
  • 1.0625" (1-1/16)
  • 1.1250" (1-1/8)
  • 1.1875" (1-3/16)
  • 1.2500" (1-1/4)
  • 1.3750" (1-3/8)
  • 1.5000" (1-1/2)
  • 1.6250" (1-5/8)
  • 1.7500" (1-3/4)
  • 1.8750" (1-7/8)
  • 2.0000" (2)
  • 2.2500" (2-1/4)
  • 3.1750"
  • M10.000
  • M11.000
  • M12.000
  • M13.000
  • M14.000
  • M15.000
  • M16.000
  • M18.00
  • M18.000
  • M19.000
  • M2.000
  • M20.000
  • M22.000
  • M24.000
  • M25.000
  • M26.000
  • M28.000
  • M3.000
  • M30.000
  • M32.000
  • M36.000
  • M4.000
  • M40.000
  • M45.000
  • M5.000
  • M50.000
  • M6.000
  • M7.000
  • M8.000
  • M9.000
  • .1880"
  • .2190"
  • .2500" (1/4)
  • .2600"
  • .3000"
  • .3130"
  • .3200"
  • .3250"
  • .3400"
  • .3440"
  • .3600"
  • .3750" (3/8)
  • .3800"
  • .3900"
  • .4000"
  • .4060"
  • .4100"
  • .4220"
  • .4330"
  • .4380"
  • .4500"
  • .4550"
  • .4690"
  • .4700"
  • .5000" (1/2)
  • .5100"
  • .5200"
  • .5310"
  • .5500"
  • .5510"
  • .5600"
  • .5630"
  • .5750"
  • .5850"
  • .5900"
  • .5940"
  • .5950"
  • .6000"
  • .6100"
  • .6160"
  • .6250" (5/8)
  • .6300"
  • .6400"
  • .6450"
  • .6500"
  • .6550"
  • .6600"
  • .6730"
  • .6750"
  • .6800"
  • .6850"
  • .6880"
  • .6900"
  • .6960"
  • .7000"
  • .7030"
  • .7080"
  • .7190"
  • .7200"
  • .7400"
  • .7500" (3/4)
  • .7660"
  • .7810"
  • .7870"
  • .8000"
  • .8010"
  • .8050"
  • .8130"
  • .8150"
  • .8200"
  • .8250"
  • .8270"
  • .8400"
  • .8440"
  • .8500"
  • .8600"
  • .8700"
  • .8750" (7/8)
  • .8800"
  • .9000"
  • .9060"
  • .9100"
  • .9300"
  • .9380"
  • .9400"
  • .9500"
  • .9530"
  • .9620"
  • .9690"
  • .9800"
  • .9840"
  • .9850"
  • .9860"
  • 1.0000" (1)
  • 1.0230"
  • 1.0600"
  • 1.0630"
  • 1.0750"
  • 1.0800"
  • 1.0850"
  • 1.0940"
  • 1.1000"
  • 1.1090"
  • 1.1180"
  • 1.1200"
  • 1.1250" (1-1/8)
  • 1.1300"
  • 1.1400"
  • 1.1600"
  • 1.1720"
  • 1.1800"
  • 1.1810"
  • 1.1850"
  • 1.1880"
  • 1.1900"
  • 1.2000"
  • 1.2190"
  • 1.2200"
  • 1.2240"
  • 1.2500" (1-1/4)
  • 1.2810"
  • 1.2970"
  • 1.3100"
  • 1.3130"
  • 1.3200"
  • 1.3250"
  • 1.3280"
  • 1.3300"
  • 1.3380"
  • 1.3440"
  • 1.3500"
  • 1.3750" (1-3/8)
  • 1.3770"
  • 1.3800"
  • 1.3900"
  • 1.4000"
  • 1.4050"
  • 1.4060"
  • 1.4150"
  • 1.4200"
  • 1.4220"
  • 1.4240"
  • 1.4300"
  • 1.4380"
  • 1.4500"
  • 1.4530"
  • 1.4570"
  • 1.4600"
  • 1.4690"
  • 1.4700"
  • 1.4750"
  • 1.4860"
  • 1.5000" (1-1/2)
  • 1.5300"
  • 1.5310"
  • 1.5600"
  • 1.5630"
  • 1.5700"
  • 1.5750"
  • 1.5800"
  • 1.5940"
  • 1.5960"
  • 1.6000"
  • 1.6250" (1-5/8)
  • 1.6500"
  • 1.6870"
  • 1.6880"
  • 1.6900"
  • 1.7000"
  • 1.7030"
  • 1.7190"
  • 1.7200"
  • 1.7300"
  • 1.7500" (1-3/4)
  • 1.7600"
  • 1.7700"
  • 1.7720"
  • 1.7810"
  • 1.7900"
  • 1.8000"
  • 1.8100"
  • 1.8130"
  • 1.8280"
  • 1.8290"
  • 1.8500"
  • 1.8750" (1-7/8)
  • 1.8800"
  • 1.9000"
  • 1.9060"
  • 1.9100"
  • 1.9375"
  • 1.9380"
  • 1.9400"
  • 1.9500"
  • 1.9530"
  • 1.9690"
  • 1.9850"
  • 10.0000" (10)
  • 10.1200"
  • 10.2000"
  • 10.2500" (10-1/4)
  • 10.3000"
  • 10.3700"
  • 10.4000"
  • 10.5000" (10-1/2)
  • 10.6000"
  • 10.7000"
  • 11.0000" (11)
  • 11.3000"
  • 11.3700"
  • 11.5000" (11-1/2)
  • 11.7000"
  • 11.7500" (11-3/4)
  • 11.8000"
  • 2.0000" (2)
  • 2.0310"
  • 2.0630"
  • 2.1250"
  • 2.1300"
  • 2.1500"
  • 2.1560"
  • 2.1650"
  • 2.1700"
  • 2.1880"
  • 2.1970"
  • 2.2100"
  • 2.2200"
  • 2.2500" (2-1/4)
  • 2.2760"
  • 2.2810"
  • 2.3100"
  • 2.3130"
  • 2.3300"
  • 2.3530"
  • 2.3600"
  • 2.3620"
  • 2.3750" (2-3/8)
  • 2.3800"
  • 2.3850"
  • 2.4000"
  • 2.4220"
  • 2.4280"
  • 2.4380"
  • 2.4400"
  • 2.4690"
  • 2.4700"
  • 2.5000" (2-1/2)
  • 2.5500"
  • 2.5600"
  • 2.5630"
  • 2.6000"
  • 2.6250" (2-5/8)
  • 2.6500"
  • 2.6880"
  • 2.7000"
  • 2.7100"
  • 2.7500" (2-3/4)
  • 2.7550"
  • 2.7600"
  • 2.8000"
  • 2.8130"
  • 2.8700"
  • 2.8750" (2-7/8)
  • 2.8800"
  • 2.9000"
  • 2.9380"
  • 2.9400"
  • 2.9500"
  • 2.9850"
  • 3.0000" (3)
  • 3.0300"
  • 3.0600"
  • 3.0620"
  • 3.0630"
  • 3.0900"
  • 3.0940"
  • 3.1200"
  • 3.1250" (3-1/8)
  • 3.1300"
  • 3.1470"
  • 3.1500"
  • 3.1560"
  • 3.1880"
  • 3.2190"
  • 3.2300"
  • 3.2500" (3-1/4)
  • 3.3000"
  • 3.3100"
  • 3.3130"
  • 3.3750" (3-3/8)
  • 3.4250"
  • 3.4370"
  • 3.4380"
  • 3.4690"
  • 3.4840"
  • 3.5000" (3-1/2)
  • 3.5300"
  • 3.5630"
  • 3.6000"
  • 3.6250" (3-5/8)
  • Rectangle
  • Square
Results 1 - 15 of 10028
|<  <   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ...   >  >|
Results 1 - 15 of 10028
|<  <   1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ...   >  >|