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Woodruff Keys
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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 | |||||||||||||
| 1 | 1/16" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A080 | 000000 | ||
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A085 | 00000 | ||
| 3 | 1/8" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A090 | 00000 | ||
| 4 | 3/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A095 | 00000 | ||
| 5 | 1/8" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A100 | 00000 | ||
| 6 | 5/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A105 | 00000 | ||
| 7 | 1/8" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A115 | 00000 | ||
| 8 | 5/32" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A120 | 00000 | ||
| 9 | 3/16" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A125 | 00000 | ||
| 10 | 5/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98481A135 | 00000 | ||
| 11 | 3/16" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98481A140 | 00000 | ||
| 12 | 7/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98481A145 | 00000 | ||
| 13 | 3/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A160 | 00000 | ||
| 14 | 7/32" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A165 | 00000 | ||
| 15 | 1/4" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A170 | 00000 | ||
| 16 | 3/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A195 | 00000 | ||
| 17 | 7/32" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A200 | 00000 | ||
| 18 | 1/4" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A205 | 00000 | ||
| 19 | 3/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A220 | 00000 | ||
| 20 | 7/32" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A225 | 00000 | ||
| 21 | 1/4" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A230 | 00000 | ||
| 22 | 1/4" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A243 | 0000 | ||
| 23 | 5/16" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A245 | 00000 | ||
| 24 | 1/4" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A255 | 00000 | ||
| 25 | 5/16" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A260 | 00000 | ||
| 61 | 3/16" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98481A110 | 00000 | ||
| 91 | 1/4" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98481A130 | 00000 | ||
| 126 | 3/16" | 2 1/8" | 0.396" | 1.38" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A227 | 00000 | ||
| 141 | 1/4" | 1" | 0.364" | 0.99" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A190 | 00000 | ||
| 152 | 3/8" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A185 | 00000 | ||
| 201 | 1/16" | 1/4" | 0.109" | 0.248" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98481A050 | 00000 | ||
| 206 | 1/16" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98481A055 | 00000 | ||
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98481A060 | 00000 | ||
| 211 | 1/16" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 100 | 98481A065 | 00000 | ||
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98481A070 | 00000 | ||
| 213 | 1/8" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98481A075 | 00000 | ||
| A | 1/4" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98481A150 | 00000 | ||
| B | 5/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A175 | 00000 | ||
| C | 5/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98481A210 | 00000 | ||
| D | 5/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A235 | 00000 | ||
| E | 3/8" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A240 | 00000 | ||
| F | 3/8" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A250 | 00000 | ||
| G | 3/8" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A265 | 00000 | ||
| TX | 3/8" | 2 3/4" | 0.584" | 2" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98481A300 | 00000 | ||
| V | 1/2" | 2 3/4" | 0.75" | 2.317" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 98481A335 | 00000 | ||
| VX | 1/2" | 2 3/4" | 0.594" | 2" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 98481A310 | 00000 | ||
8630 Alloy Steel | |||||||||||||
| 1 | 1/16" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98525A080 | 00000 | ||
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98525A085 | 00000 | ||
| 3 | 1/8" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98525A090 | 00000 | ||
| 4 | 3/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98525A095 | 00000 | ||
| 5 | 1/8" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 100 | 98525A100 | 00000 | ||
| 6 | 5/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98525A105 | 00000 | ||
| 7 | 1/8" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98525A115 | 00000 | ||
| 8 | 5/32" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98525A120 | 00000 | ||
| 9 | 3/16" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98525A125 | 00000 | ||
| 10 | 5/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98525A135 | 00000 | ||
| 11 | 3/16" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A140 | 00000 | ||
| 12 | 7/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A145 | 00000 | ||
| 13 | 3/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A160 | 00000 | ||
| 14 | 7/32" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A165 | 00000 | ||
| 15 | 1/4" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A170 | 00000 | ||
| 16 | 3/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A195 | 0000 | ||
| 17 | 7/32" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A200 | 0000 | ||
| 18 | 1/4" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A205 | 00000 | ||
| 19 | 3/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A220 | 00000 | ||
| 20 | 7/32" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A225 | 00000 | ||
| 21 | 1/4" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A230 | 00000 | ||
| 22 | 1/4" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A243 | 00000 | ||
| 23 | 5/16" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A245 | 00000 | ||
| 24 | 1/4" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A255 | 00000 | ||
| 25 | 5/16" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A260 | 00000 | ||
| 61 | 3/16" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 50 | 98525A110 | 00000 | ||
| 91 | 1/4" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A130 | 00000 | ||
| 126 | 3/16" | 2 1/8" | 0.396" | 1.38" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A227 | 00000 | ||
| 141 | 1/4" | 1" | 0.364" | 0.99" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A190 | 00000 | ||
| 152 | 3/8" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A185 | 00000 | ||
| 201 | 1/16" | 1/4" | 0.109" | 0.248" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 25 | 98525A050 | 00000 | ||
| 206 | 1/16" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 25 | 98525A055 | 00000 | ||
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 25 | 98525A060 | 00000 | ||
| 211 | 1/16" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98525A065 | 00000 | ||
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98525A070 | 00000 | ||
| 213 | 1/8" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 50 | 98525A075 | 00000 | ||
| A | 1/4" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 25 | 98525A150 | 00000 | ||
| B | 5/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A175 | 0000 | ||
| C | 5/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A210 | 00000 | ||
| D | 5/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A235 | 00000 | ||
| E | 3/8" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 10 | 98525A240 | 00000 | ||
| F | 3/8" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 98525A250 | 00000 | ||
| G | 3/8" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 98525A265 | 00000 | ||
| TX | 3/8" | 2 3/4" | 0.584" | 2" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 98525A300 | 00000 | ||
| V | 1/2" | 2 3/4" | 0.75" | 2.317" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 1 | 98525A335 | 00000 | ||
| VX | 1/2" | 2 3/4" | 0.594" | 2" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 98525A310 | 00000 | ||
316 Stainless Steel | |||||||||||||
| 1 | 1/16" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 97940A080 | 00000 | ||
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 97940A085 | 00000 | ||
| 3 | 1/8" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 97940A090 | 00000 | ||
| 5 | 1/8" | 5/8" | 0.25" | 0.612" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A100 | 00000 | ||
| 6 | 5/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 97940A105 | 00000 | ||
| 7 | 1/8" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 1 | 97940A115 | 0000 | ||
| 8 | 5/32" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 97940A120 | 00000 | ||
| 9 | 3/16" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 5 | 97940A125 | 00000 | ||
| 11 | 3/16" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 1 | 97940A140 | 0000 | ||
| 15 | 1/4" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 1 | 97940A170 | 0000 | ||
| 61 | 3/16" | 5/8" | 0.25" | 0.612" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A110 | 00000 | ||
| 91 | 1/4" | 3/4" | 0.313" | 0.74" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 1 | 97940A130 | 0000 | ||
| 201 | 1/16" | 1/4" | 0.109" | 0.248" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A050 | 00000 | ||
| 206 | 1/16" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A055 | 00000 | ||
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A060 | 00000 | ||
| 211 | 1/16" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A065 | 00000 | ||
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A070 | 00000 | ||
| 213 | 1/8" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ASME B17.2 | Inch | 5 | 97940A075 | 00000 | ||
| A | 1/4" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ASME B17.2 | Inch | 1 | 97940A150 | 0000 | ||
