View catalog pages (2)ForwardPrintHow can we improve?142 Products

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.

Steel keys offer good strength.

316 stainless steel keys have excellent corrosion resistance, but aren't as strong as steel keys. They may be mildly magnetic.

Inch keys conform to ANSI B17.2 standards for dimensions and tolerances.

Metric keys conform to DIN 6888 standards.

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

Tolerance

Key

Number Wd. For Keyway

Dia. Ht. Lg. Wd. Ht. Specifications

Met Pkg.

Qty. Pkg.

1018-1045 Carbon Steel

1 1/16" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A080 $11.65

2 3/32" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A085 11.90

3 1/8" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A090 12.95

4 3/32" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A095 13.07

5 1/8" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A100 13.47

6 5/32" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A105 13.75

7 1/8" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A115 13.52

8 5/32" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A120 17.26

9 3/16" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A125 16.97

10 5/32" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98481A135 11.52

11 3/16" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98481A140 14.10

12 7/32" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98481A145 16.43

13 3/16" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A160 10.04

14 7/32" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A165 11.01

15 1/4" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A170 11.45

16 3/16" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A195 12.05

17 7/32" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A200 14.72

18 1/4" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A205 15.01

19 3/16" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A220 14.05

20 7/32" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A225 20.80

21 1/4" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A230 18.24

22 1/4" 1 3/8" 0.584" 1.362" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A243 9.87

23 5/16" 1 3/8" 0.584" 1.362" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A245 11.34

24 1/4" 1 1/2" 0.631" 1.484" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A255 10.37

25 5/16" 1 1/2" 0.631" 1.484" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A260 13.15

61 3/16" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98481A110 16.06

91 1/4" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98481A130 14.11

126 3/16" 2 1/8" 0.396" 1.38" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A227 12.16

141 1/4" 1" 0.364" 0.99" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A190 12.63

152 3/8" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A185 17.16

201 1/16" 1/4" 0.109" 0.248" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98481A050 16.43

206 1/16" 5/16" 0.14" 0.311" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98481A055 16.95

207 3/32" 5/16" 0.14" 0.311" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98481A060 14.52

211 1/16" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 100 98481A065 18.59

212 3/32" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98481A070 10.52

213 1/8" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98481A075 12.45

A 1/4" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98481A150 18.22

B 5/16" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A175 14.41

C 5/16" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98481A210 18.28

D 5/16" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A235 10.52

E 3/8" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A240 12.11

F 3/8" 1 3/8" 0.584" 1.362" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A250 13.66

G 3/8" 1 1/2" 0.631" 1.484" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A265 14.60

TX 3/8" 2 3/4" 0.584" 2" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98481A300 16.71

V 1/2" 2 3/4" 0.75" 2.317" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 98481A335 19.84

VX 1/2" 2 3/4" 0.594" 2" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 98481A310 17.79

__ 1.5mm 7mm 2.6mm 6.8mm -0.025mm to 0.000mm __ DIN 6888 25 98490A110 13.31

__ 2mm 7mm 2.6mm 6.8mm -0.025mm to 0.000mm __ DIN 6888 25 98490A120 11.31

__ 2mm 10mm 3.7mm 9.7mm -0.025mm to 0.000mm __ DIN 6888 25 98490A130 12.14

__ 2mm 13mm 5mm 12.7mm -0.025mm to 0.000mm __ DIN 6888 25 98490A140 14.32

__ 2.5mm 10mm 3.7mm 9.7mm -0.025mm to 0.000mm __ DIN 6888 25 98490A150 9.88

__ 3mm 10mm 3.7mm 9.7mm -0.025mm to 0.000mm __ DIN 6888 25 98490A160 9.80

__ 3mm 13mm 5mm 12.7mm -0.025mm to 0.000mm __ DIN 6888 25 98490A170 8.12

__ 3mm 16mm 6.5mm 15.7mm -0.025mm to 0.000mm __ DIN 6888 25 98490A180 10.80

__ 4mm 13mm 5mm 12.7mm -0.030mm to 0.000mm __ DIN 6888 25 98490A190 10.14

__ 4mm 16mm 6.5mm 15.7mm -0.030mm to 0.000mm __ DIN 6888 25 98490A200 10.47

__ 4mm 19mm 7.5mm 18.6mm -0.030mm to 0.000mm __ DIN 6888 25 98490A210 14.65

__ 5mm 16mm 6.5mm 15.7mm -0.030mm to 0.000mm __ DIN 6888 25 98490A220 11.72

__ 5mm 19mm 7.5mm 18.6mm -0.030mm to 0.000mm __ DIN 6888 25 98490A230 14.65

__ 5mm 22mm 9mm 21.6mm -0.030mm to 0.000mm __ DIN 6888 25 98490A240 17.10

__ 5mm 25mm 10mm 24.5mm -0.030mm to 0.000mm __ DIN 6888 10 98490A250 16.23

__ 6mm 19mm 7.5mm 18.6mm -0.030mm to 0.000mm __ DIN 6888 10 98490A255 7.87

__ 6mm 22mm 9mm 21.6mm -0.030mm to 0.000mm __ DIN 6888 10 98490A260 8.04

__ 6mm 25mm 10mm 24.5mm -0.030mm to 0.000mm __ DIN 6888 10 98490A270 10.28

__ 6mm 28mm 11mm 27.35mm -0.030mm to 0.000mm __ DIN 6888 10 98490A280 13.13

__ 8mm 22mm 9mm 21.6mm -0.036mm to 0.000mm __ DIN 6888 10 98490A290 13.00

__ 8mm 28mm 11mm 27.35mm -0.036mm to 0.000mm __ DIN 6888 10 98490A300 14.26

__ 8mm 32mm 13mm 31.4mm -0.036mm to 0.000mm __ DIN 6888 10 98490A310 18.30

__ 10mm 28mm 11mm 27.35mm -0.030mm to 0.000mm __ DIN 6888 5 98490A315 9.09

__ 10mm 32mm 13mm 31.4mm -0.036mm to 0.000mm __ DIN 6888 5 98490A320 13.13

__ 10mm 45mm 16mm 43.1mm -0.036mm to 0.000mm __ DIN 6888 5 98490A330 19.25

8630 Alloy Steel

1 1/16" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98525A080 12.06

2 3/32" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98525A085 12.59

3 1/8" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98525A090 13.69

4 3/32" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98525A095 14.04

5 1/8" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 100 98525A100 14.45

6 5/32" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98525A105 7.85

7 1/8" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98525A115 8.58

8 5/32" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98525A120 10.72

9 3/16" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98525A125 11.64

10 5/32" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98525A135 13.10

11 3/16" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A140 7.96

12 7/32" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A145 10.10

13 3/16" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A160 10.12

14 7/32" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A165 13.01

15 1/4" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A170 13.61

16 3/16" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A195 6.13

17 7/32" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A200 6.50

18 1/4" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A205 7.47

19 3/16" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A220 7.33

20 7/32" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A225 8.67

21 1/4" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A230 9.20

22 1/4" 1 3/8" 0.584" 1.362" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A243 11.82

23 5/16" 1 3/8" 0.584" 1.362" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A245 12.99

24 1/4" 1 1/2" 0.631" 1.484" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A255 12.33

25 5/16" 1 1/2" 0.631" 1.484" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A260 14.90

61 3/16" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 50 98525A110 10.34

91 1/4" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A130 8.42

126 3/16" 2 1/8" 0.396" 1.38" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A227 15.23

141 1/4" 1" 0.364" 0.99" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A190 14.20

152 3/8" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A185 8.95

201 1/16" 1/4" 0.109" 0.248" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 25 98525A050 9.80

206 1/16" 5/16" 0.14" 0.311" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 25 98525A055 8.62

207 3/32" 5/16" 0.14" 0.311" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 25 98525A060 7.79

211 1/16" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98525A065 9.26

212 3/32" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98525A070 11.01

213 1/8" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 50 98525A075 12.59

A 1/4" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 25 98525A150 10.27

B 5/16" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A175 7.12

C 5/16" 1 1/8" 0.475" 1.114" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A210 9.35

D 5/16" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A235 12.20

E 3/8" 1 1/4" 0.537" 1.24" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 10 98525A240 14.85

F 3/8" 1 3/8" 0.584" 1.362" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 98525A250 8.68

G 3/8" 1 1/2" 0.631" 1.484" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 98525A265 10.82

TX 3/8" 2 3/4" 0.584" 2" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 98525A300 10.81

V 1/2" 2 3/4" 0.75" 2.317" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 1 98525A335 9.13

VX 1/2" 2 3/4" 0.594" 2" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 98525A310 18.43

316 Stainless Steel

1 1/16" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 97940A080 11.64

2 3/32" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 97940A085 12.12

3 1/8" 1/2" 0.194" 0.491" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 97940A090 12.52

5 1/8" 5/8" 0.25" 0.612" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A100 14.30

6 5/32" 5/8" 0.24" 0.612" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 97940A105 16.69

7 1/8" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 1 97940A115 4.11

8 5/32" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 97940A120 19.41

9 3/16" 3/4" 0.303" 0.74" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 5 97940A125 19.59

11 3/16" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 1 97940A140 3.80

15 1/4" 1" 0.428" 0.992" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 1 97940A170 6.78

61 3/16" 5/8" 0.25" 0.612" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A110 18.26

91 1/4" 3/4" 0.313" 0.74" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 1 97940A130 3.79

201 1/16" 1/4" 0.109" 0.248" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A050 14.09

206 1/16" 5/16" 0.14" 0.311" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A055 14.15

207 3/32" 5/16" 0.14" 0.311" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A060 13.94

211 1/16" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A065 13.98

212 3/32" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A070 14.10

213 1/8" 3/8" 0.172" 0.374" 0.000" to 0.001" -0.005" to 0.000" ANSI B17.2 5 97940A075 15.31

A 1/4" 7/8" 0.365" 0.866" 0.000" to 0.001" -0.006" to 0.000" ANSI B17.2 1 97940A150 4.46

__ 2mm 7mm 2.6mm 6.8mm -0.025mm to 0.000mm -0.100mm to 0.000mm DIN 6888 1 97940A131 7.19

__ 2mm 10mm 3.7mm 9.7mm -0.025mm to 0.000mm -0.120mm to 0.000mm DIN 6888 1 97940A132 7.88

__ 3mm 10mm 3.7mm 9.7mm -0.025mm to 0.000mm -0.120mm to 0.000mm DIN 6888 1 97940A133 8.09

__ 4mm 16mm 6.5mm 15.7mm -0.030mm to 0.000mm -0.150mm to 0.000mm DIN 6888 1 97940A135 10.03

__ 5mm 16mm 6.5mm 15.7mm -0.030mm to 0.000mm -0.150mm to 0.000mm DIN 6888 1 97940A137 10.54

__ 5mm 19mm 7.5mm 18.6mm -0.030mm to 0.000mm -0.150mm to 0.000mm DIN 6888 1 97940A138 11.13