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.

The height of inch keys decreases by 1/8" for every 12" of length. They conform to ANSI B17.1 Class 1 standards for dimensions and tolerances.

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.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

Tolerance

Head

Lg. Ht. Wd. Ht. Lg. End Ht. Rate of Taper Specifications Met 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" 1/8" per 12" ANSI B17.1 Class 1 98471A117 $2.80

2" -0.002" to 0.000" -0.002" to 0.000" 5/16" 9/32" 0.169" 1/8" per 12" ANSI B17.1 Class 1 98471A118 3.00

3" -0.002" to 0.000" -0.002" to 0.000" 5/16" 9/32" 0.158" 1/8" per 12" ANSI B17.1 Class 1 98471A120 3.40

1/4" × 1/4"

1 1/2" -0.002" to 0.000" -0.002" to 0.000" 1/2" 3/8" 0.237" 1/8" per 12" ANSI B17.1 Class 1 98471A132 3.18

2" -0.002" to 0.000" -0.002" to 0.000" 1/2" 3/8" 0.232" 1/8" per 12" ANSI B17.1 Class 1 98471A133 3.57

2 1/2" -0.002" to 0.000" -0.002" to 0.000" 1/2" 3/8" 0.227" 1/8" per 12" ANSI B17.1 Class 1 98471A134 3.79

3" -0.002" to 0.000" -0.002" to 0.000" 1/2" 3/8" 0.221" 1/8" per 12" ANSI B17.1 Class 1 98471A135 3.89

3 1/2" -0.002" to 0.000" -0.002" to 0.000" 1/2" 3/8" 0.216" 1/8" per 12" ANSI B17.1 Class 1 98471A136 4.11

4" -0.002" to 0.000" -0.002" to 0.000" 1/2" 3/8" 0.211" 1/8" per 12" ANSI B17.1 Class 1 98471A137 4.29

5/16" × 5/16"

2" -0.002" to 0.000" -0.002" to 0.000" 1/2" 7/16" 0.295" 1/8" per 12" ANSI B17.1 Class 1 98471A142 4.02

2 1/2" -0.002" to 0.000" -0.002" to 0.000" 1/2" 7/16" 0.290" 1/8" per 12" ANSI B17.1 Class 1 98471A143 4.13

3" -0.002" to 0.000" -0.002" to 0.000" 1/2" 7/16" 0.285" 1/8" per 12" ANSI B17.1 Class 1 98471A144 4.31

4" -0.002" to 0.000" -0.002" to 0.000" 1/2" 7/16" 0.274" 1/8" per 12" ANSI B17.1 Class 1 98471A146 4.58

3/8" × 3/8"

1" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.368" 1/8" per 12" ANSI B17.1 Class 1 98471A169 3.30

1 1/2" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.363" 1/8" per 12" ANSI B17.1 Class 1 98471A171 3.59

2" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.358" 1/8" per 12" ANSI B17.1 Class 1 98471A172 4.09

2 1/2" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.353" 1/8" per 12" ANSI B17.1 Class 1 98471A173 4.38

3" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.348" 1/8" per 12" ANSI B17.1 Class 1 98471A174 4.75

3 1/2" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.342" 1/8" per 12" ANSI B17.1 Class 1 98471A175 4.97

4" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.337" 1/8" per 12" ANSI B17.1 Class 1 98471A176 5.39

4 1/2" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.332" 1/8" per 12" ANSI B17.1 Class 1 98471A177 5.78

5" -0.002" to 0.000" -0.002" to 0.000" 5/8" 1/2" 0.327" 1/8" per 12" ANSI B17.1 Class 1 98471A178 6.16

7/16" × 7/16"

4" -0.002" to 0.000" -0.002" to 0.000" 3/4" 9/16" 0.400" 1/8" per 12" ANSI B17.1 Class 1 98471A192 5.89

4 1/2" -0.002" to 0.000" -0.002" to 0.000" 3/4" 9/16" 0.395" 1/8" per 12" ANSI B17.1 Class 1 98471A195 6.08

1/2" × 1/2"

2" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.484" 1/8" per 12" ANSI B17.1 Class 1 98471A237 5.32

2 1/2" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.479" 1/8" per 12" ANSI B17.1 Class 1 98471A238 5.57

3" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.474" 1/8" per 12" ANSI B17.1 Class 1 98471A239 6.04

3 1/2" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.469" 1/8" per 12" ANSI B17.1 Class 1 98471A240 6.41

4" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.464" 1/8" per 12" ANSI B17.1 Class 1 98471A241 6.79

4 1/2" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.458" 1/8" per 12" ANSI B17.1 Class 1 98471A242 7.61

5" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.453" 1/8" per 12" ANSI B17.1 Class 1 98471A243 7.71

5 1/2" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.448" 1/8" per 12" ANSI B17.1 Class 1 98471A244 8.01

6" -0.002" to 0.000" -0.002" to 0.000" 3/4" 5/8" 0.443" 1/8" per 12" ANSI B17.1 Class 1 98471A245 8.37

5/8" × 5/8"

3" -0.004" to 0.000" -0.004" to 0.000" 1" 3/4" 0.600" 1/8" per 12" ANSI B17.1 Class 1 98471A318 8.45

3 1/2" -0.004" to 0.000" -0.004" to 0.000" 1" 3/4" 0.595" 1/8" per 12" ANSI B17.1 Class 1 98471A319 9.14

4" -0.004" to 0.000" -0.004" to 0.000" 1" 3/4" 0.590" 1/8" per 12" ANSI B17.1 Class 1 98471A320 9.68

4 1/2" -0.004" to 0.000" -0.004" to 0.000" 1" 3/4" 0.585" 1/8" per 12" ANSI B17.1 Class 1 98471A321 10.35

5" -0.004" to 0.000" -0.004" to 0.000" 1" 3/4" 0.579" 1/8" per 12" ANSI B17.1 Class 1 98471A322 10.91

5 1/2" -0.004" to 0.000" -0.004" to 0.000" 1" 3/4" 0.574" 1/8" per 12" ANSI B17.1 Class 1 98471A323 11.58

6" -0.004" to 0.000" -0.004" to 0.000" 1" 3/4" 0.569" 1/8" per 12" ANSI B17.1 Class 1 98471A324 12.12

3/4" × 3/4"

4" -0.004" to 0.000" -0.004" to 0.000" 1 1/8" 7/8" 0.716" 1/8" per 12" ANSI B17.1 Class 1 98471A360 13.24

4 1/2" -0.004" to 0.000" -0.004" to 0.000" 1 1/8" 7/8" 0.711" 1/8" per 12" ANSI B17.1 Class 1 98471A361 14.14

5" -0.004" to 0.000" -0.004" to 0.000" 1 1/8" 7/8" 0.706" 1/8" per 12" ANSI B17.1 Class 1 98471A362 15.03

5 1/2" -0.004" to 0.000" -0.004" to 0.000" 1 1/8" 7/8" 0.701" 1/8" per 12" ANSI B17.1 Class 1 98471A363 15.94

6" -0.004" to 0.000" -0.004" to 0.000" 1 1/8" 7/8" 0.695" 1/8" per 12" ANSI B17.1 Class 1 98471A364 16.71

7/8" × 7/8"

4" -0.004" to 0.000" -0.004" to 0.000" 1 1/4" 1" 0.842" 1/8" per 12" ANSI B17.1 Class 1 98471A404 18.69

5 1/2" -0.004" to 0.000" -0.004" to 0.000" 1 1/4" 1" 0.827" 1/8" per 12" ANSI B17.1 Class 1 98471A407 21.59

6" -0.004" to 0.000" -0.004" to 0.000" 1 1/4" 1" 0.822" 1/8" per 12" ANSI B17.1 Class 1 98471A408 22.79

1" × 1"

5" -0.004" to 0.000" -0.004" to 0.000" 1 1/2" 1 1/8" 0.958" 1/8" per 12" ANSI B17.1 Class 1 98471A455 27.00

6" -0.004" to 0.000" -0.004" to 0.000" 1 1/2" 1 1/8" 0.948" 1/8" per 12" ANSI B17.1 Class 1 98471A457 30.18

6mm × 6mm

40mm 0.000mm to 0.100mm -0.030mm to 0.000mm 10mm 6mm 5.660mm 1 mm per 100 mm DIN 6887 98471A201 5.57

7mm × 8mm

40mm 0.000mm to 0.200mm -0.036mm to 0.000mm 11mm 8mm 6.670mm 1 mm per 100 mm DIN 6887 98471A202 6.90

50mm 0.000mm to 0.200mm -0.036mm to 0.000mm 11mm 8mm 6.570mm 1 mm per 100 mm DIN 6887 98471A204 8.39

8mm × 10mm

60mm 0.000mm to 0.200mm -0.036mm to 0.000mm 12mm 10mm 7.480mm 1 mm per 100 mm DIN 6887 98471A207 12.43

10mm × 16mm

60mm 0.000mm to 0.200mm -0.043mm to 0.000mm 16mm 16mm 9.500mm 1 mm per 100 mm DIN 6887 98471A225 29.64

11mm × 18mm

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Tapered Gib Keys