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.
For technical drawings and 3-D models, click on a part number.
Tolerance | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Woodruff 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 | 000000000 | 000000 |
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 3 | 1/8" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 4 | 3/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 5 | 1/8" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 6 | 5/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 7 | 1/8" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 8 | 5/32" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 9 | 3/16" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 10 | 5/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 11 | 3/16" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 12 | 7/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 13 | 3/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 14 | 7/32" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 15 | 1/4" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 16 | 3/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 17 | 7/32" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 18 | 1/4" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 19 | 3/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 20 | 7/32" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 21 | 1/4" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 22 | 1/4" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 0000 |
| 23 | 5/16" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 24 | 1/4" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 25 | 5/16" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 61 | 3/16" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 91 | 1/4" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 126 | 3/16" | 2 1/8" | 0.396" | 1.38" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 141 | 1/4" | 1" | 0.364" | 0.99" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 152 | 3/8" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 201 | 1/16" | 1/4" | 0.109" | 0.248" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 206 | 1/16" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 211 | 1/16" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 213 | 1/8" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| A | 1/4" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| B | 5/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| C | 5/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| D | 5/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| E | 3/8" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| F | 3/8" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| G | 3/8" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| TX | 3/8" | 2 3/4" | 0.584" | 2" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| V | 1/2" | 2 3/4" | 0.75" | 2.317" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| VX | 1/2" | 2 3/4" | 0.594" | 2" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| __ | 1.5mm | 7mm | 2.6mm | 6.8mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 2mm | 7mm | 2.6mm | 6.8mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 2mm | 10mm | 3.7mm | 9.7mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 2mm | 13mm | 5mm | 12.7mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 2.5mm | 10mm | 3.7mm | 9.7mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 0000 |
| __ | 3mm | 10mm | 3.7mm | 9.7mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 0000 |
| __ | 3mm | 13mm | 5mm | 12.7mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 0000 |
| __ | 3mm | 16mm | 6.5mm | 15.7mm | -0.025mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 4mm | 13mm | 5mm | 12.7mm | -0.030mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 4mm | 16mm | 6.5mm | 15.7mm | -0.030mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 4mm | 19mm | 7.5mm | 18.6mm | -0.030mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 5mm | 16mm | 6.5mm | 15.7mm | -0.030mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 5mm | 19mm | 7.5mm | 18.6mm | -0.030mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 5mm | 22mm | 9mm | 21.6mm | -0.030mm to 0.000mm | __ | DIN 6888 | 25 | 000000000 | 00000 |
| __ | 5mm | 25mm | 10mm | 24.5mm | -0.030mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 00000 |
| __ | 6mm | 19mm | 7.5mm | 18.6mm | -0.030mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 00000 |
| __ | 6mm | 22mm | 9mm | 21.6mm | -0.030mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 0000 |
| __ | 6mm | 25mm | 10mm | 24.5mm | -0.030mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 00000 |
| __ | 6mm | 28mm | 11mm | 27.35mm | -0.030mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 00000 |
| __ | 8mm | 22mm | 9mm | 21.6mm | -0.036mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 00000 |
| __ | 8mm | 28mm | 11mm | 27.35mm | -0.036mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 00000 |
| __ | 8mm | 32mm | 13mm | 31.4mm | -0.036mm to 0.000mm | __ | DIN 6888 | 10 | 000000000 | 00000 |
| __ | 10mm | 28mm | 11mm | 27.35mm | -0.030mm to 0.000mm | __ | DIN 6888 | 5 | 000000000 | 0000 |
| __ | 10mm | 32mm | 13mm | 31.4mm | -0.036mm to 0.000mm | __ | DIN 6888 | 5 | 000000000 | 00000 |
| __ | 10mm | 45mm | 16mm | 43.1mm | -0.036mm to 0.000mm | __ | DIN 6888 | 5 | 000000000 | 00000 |
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 | 000000000 | 00000 |
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 3 | 1/8" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 4 | 3/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 5 | 1/8" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 100 | 000000000 | 00000 |
| 6 | 5/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 0000 |
| 7 | 1/8" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 8 | 5/32" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 9 | 3/16" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 10 | 5/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 11 | 3/16" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 0000 |
| 12 | 7/32" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 13 | 3/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 14 | 7/32" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 15 | 1/4" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 16 | 3/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 0000 |
| 17 | 7/32" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 0000 |
| 18 | 1/4" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 0000 |
| 19 | 3/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 0000 |
| 20 | 7/32" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 21 | 1/4" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 22 | 1/4" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 23 | 5/16" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 24 | 1/4" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 25 | 5/16" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 61 | 3/16" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 91 | 1/4" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 0000 |
| 126 | 3/16" | 2 1/8" | 0.396" | 1.38" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 141 | 1/4" | 1" | 0.364" | 0.99" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 152 | 3/8" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| 201 | 1/16" | 1/4" | 0.109" | 0.248" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 206 | 1/16" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 25 | 000000000 | 0000 |
| 211 | 1/16" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| 213 | 1/8" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 50 | 000000000 | 00000 |
| A | 1/4" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 25 | 000000000 | 00000 |
| B | 5/16" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 0000 |
| C | 5/16" | 1 1/8" | 0.475" | 1.114" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| D | 5/16" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| E | 3/8" | 1 1/4" | 0.537" | 1.24" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 10 | 000000000 | 00000 |
| F | 3/8" | 1 3/8" | 0.584" | 1.362" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| G | 3/8" | 1 1/2" | 0.631" | 1.484" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| TX | 3/8" | 2 3/4" | 0.584" | 2" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| V | 1/2" | 2 3/4" | 0.75" | 2.317" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 1 | 000000000 | 00000 |
| VX | 1/2" | 2 3/4" | 0.594" | 2" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
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 | 000000000 | 00000 |
| 2 | 3/32" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 3 | 1/8" | 1/2" | 0.194" | 0.491" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 5 | 1/8" | 5/8" | 0.25" | 0.612" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 6 | 5/32" | 5/8" | 0.24" | 0.612" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 7 | 1/8" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 1 | 000000000 | 0000 |
| 8 | 5/32" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 9 | 3/16" | 3/4" | 0.303" | 0.74" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 11 | 3/16" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 1 | 000000000 | 0000 |
| 15 | 1/4" | 1" | 0.428" | 0.992" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 1 | 000000000 | 0000 |
| 61 | 3/16" | 5/8" | 0.25" | 0.612" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 91 | 1/4" | 3/4" | 0.313" | 0.74" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 1 | 000000000 | 0000 |
| 201 | 1/16" | 1/4" | 0.109" | 0.248" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 206 | 1/16" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 207 | 3/32" | 5/16" | 0.14" | 0.311" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 211 | 1/16" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 212 | 3/32" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| 213 | 1/8" | 3/8" | 0.172" | 0.374" | 0.000" to 0.001" | -0.005" to 0.000" | ANSI B17.2 | 5 | 000000000 | 00000 |
| A | 1/4" | 7/8" | 0.365" | 0.866" | 0.000" to 0.001" | -0.006" to 0.000" | ANSI B17.2 | 1 | 000000000 | 0000 |
| __ | 2mm | 7mm | 2.6mm | 6.8mm | -0.025mm to 0.000mm | -0.100mm to 0.000mm | DIN 6888 | 1 | 000000000 | 0000 |
| __ | 2mm | 10mm | 3.7mm | 9.7mm | -0.025mm to 0.000mm | -0.120mm to 0.000mm | DIN 6888 | 1 | 000000000 | 0000 |
| __ | 3mm | 10mm | 3.7mm | 9.7mm | -0.025mm to 0.000mm | -0.120mm to 0.000mm | DIN 6888 | 1 | 000000000 | 0000 |
| __ | 4mm | 16mm | 6.5mm | 15.7mm | -0.030mm to 0.000mm | -0.150mm to 0.000mm | DIN 6888 | 1 | 000000000 | 00000 |
| __ | 5mm | 16mm | 6.5mm | 15.7mm | -0.030mm to 0.000mm | -0.150mm to 0.000mm | DIN 6888 | 1 | 000000000 | 00000 |
| __ | 5mm | 19mm | 7.5mm | 18.6mm | -0.030mm to 0.000mm | -0.150mm to 0.000mm | DIN 6888 | 1 | 000000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
Tolerance | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Woodruff Key Number | Wd. | Ht. | For Keyway Dia. | Lg. | Wd. | Ht. | Feet Ht. | Pkg. Qty. | Pkg. | |
1018-1045 Carbon Steel | ||||||||||
| 2 | 3/32" | 0.194" | 1/2" | 0.531" | 0.000" to 0.001" | 0.000" to 0.006" | 0.042" | 5 | 000000000 | 00000 |
| 3 | 1/8" | 0.194" | 1/2" | 0.531" | 0.000" to 0.001" | 0.000" to 0.006" | 0.056" | 5 | 000000000 | 0000 |
| 5 | 1/8" | 0.24" | 5/8" | 0.656" | 0.000" to 0.001" | 0.000" to 0.006" | 0.056" | 5 | 000000000 | 0000 |
| 6 | 5/32" | 0.24" | 5/8" | 0.656" | 0.000" to 0.001" | 0.000" to 0.006" | 0.071" | 5 | 000000000 | 0000 |
| 7 | 1/8" | 0.303" | 3/4" | 0.781" | 0.000" to 0.001" | 0.000" to 0.006" | 0.057" | 5 | 000000000 | 0000 |
| 9 | 3/16" | 0.303" | 3/4" | 0.781" | 0.000" to 0.001" | 0.000" to 0.006" | 0.057" | 5 | 000000000 | 0000 |
| 11 | 3/16" | 0.365" | 7/8" | 0.938" | 0.000" to 0.001" | 0.000" to 0.006" | 0.086" | 5 | 000000000 | 0000 |
| 15 | 1/4" | 0.428" | 1" | 1.063" | 0.000" to 0.001" | 0.000" to 0.006" | 0.115" | 5 | 000000000 | 0000 |
| 61 | 3/16" | 0.24" | 5/8" | 0.656" | 0.000" to 0.001" | 0.000" to 0.006" | 0.086" | 5 | 000000000 | 0000 |
| A | 1/4" | 0.365" | 7/8" | 0.938" | 0.000" to 0.001" | 0.000" to 0.006" | 0.114" | 5 | 000000000 | 0000 |
Machine Key and Woodruff Key Assortments
 |  Straight Key |
 Woodruff Key |
| Number of Pieces | Straight Keys Included | Woodruff Keys Included | Container Type | Each | |
1018-1045 Carbon Steel | |||||
|---|---|---|---|---|---|
| 401 | 1/8" × 1/8" × 1 1/2" Lg. (50 Pieces) 3/16" × 1/4" × 1 1/2" Lg. (25 Pieces) 3/16" × 3/16" × 1 1/2" Lg. (30 Pieces) 1/4" × 1/4" × 1 1/2" Lg. (18 Pieces) 5/16" × 5/16" × 1 1/2" Lg. (15 Pieces) 3/8" × 3/8" × 1 1/2" Lg. (15 Pieces) | Key Numbers 3 and 5 (45 Each) Key Numbers 6 and 7 (22 Each) Key Number 9 (30 Each) Key Numbers 10 and A (15 Each) Key Number 13 (12 Each) Key Number 15 (20 Each) Key Numbers C and 21 (9 Each) Key Number G (4 Each) | Plastic Box | 000000000 | 0000000 |
Woodruff Key Assortments
A rounded bottom allows these keys to rock in their seat to relieve stress on the shaft caused by vibration or misalignment.
Zinc- and zinc yellow-chromate plated steel keys resist corrosion in wet environments.
316 stainless steel keys have excellent chemical and corrosion resistance. However, they’re not as strong as steel keys.
| Number of Pieces | Woodruff Keys Included | Container Type | Each | |
1008-1045 Carbon Steel | ||||
|---|---|---|---|---|
| 30 | Key Number 3 (10 each) Key Number 6 (8 Each) Key Numbers A, 9, and 15 (4 Each) | Plastic Box | 000000000 | 000000 |
| 97 | Key Numbers 1, 2, 4, 5, 16, 19, 12, 14, 17, 20, 21, 22, 24, D, 23, E, 26, 27, 28, and 29 (1 Each) Key Numbers 3, 7, 6, 8, and 91 (4 Each) Key Number 9 (12 Each) Key Numbers 10, 13, 15, B, and 152 (3 Each) Key Numbers 11 and A (10 Each) Key Numbers 18 and G (5 Each) | Plastic Box | 000000000 | 000000 |
| 225 | Key Numbers 11, 13, and A (10 Each) Key Numbers 15, 18, and E (5 Each) Key Numbers 211, 212, 213, 1, 2, 3, 5, 7, 6, 61, 9, and 91 (15 Each) | Plastic Box | 000000000 | 000000 |
| 350 | Key Size 1.5 mm × 2.6 mm (25 Each) Key Size 2 mm × 2.6 mm (25 Each) Key Size 2 mm × 5 mm (25 Each) Key Size 2.5 mm × 3.7 mm (25 Each) Key Size 3 mm × 3.7 mm (25 Each) Key Size 3 mm × 6.5 mm (25 Each) Key Size 4 mm × 5 mm (25 Each) Key Size 4 mm × 7.5 mm (25 Each) Key Size 5 mm × 7.5 mm (20 Each) Key Size 5 mm × 9 mm (20 Each) Key Size 5 mm × 10 mm (15 Each) Key Size 6 mm × 7.5 mm (15 Each) Key Size 6 mm × 9 mm (15 Each) Key Size 6 mm × 11 mm (15 Each) Key Size 8 mm × 11 mm (15 Each) Key Size 8 mm × 13 mm (15 Each) Key Size 10 mm × 13 mm (10 Each) Key Size 10 mm × 16 mm (10 Each) | Plastic Box | 000000000 | 000000 |
Zinc-Plated 1008-1045 Carbon Steel | ||||
| 250 | Key Numbers 1, 4, 8, 211, 213 (10 Each) Key Numbers 2, 3, 7, 9, 212 (20 Each) Key Number 5 (30 each) Key Number 6 (40 Each) Key Numbers A, 10, 11, 12, 61, 91 (5 Each) | Plastic Box | 000000000 | 00000 |
Zinc Yellow-Chromate Plated 1008-1045 Carbon Steel | ||||
| 70 | Key Size 2 mm × 3.7 mm (5 Each) Key Size 3 mm × 3.7 mm (8 Each) Key Size 3 mm × 5 mm (8 Each) Key Size 4 mm × 5 mm (6 Each) Key Size 4 mm × 6.5 mm (6 Each) Key Size 5 mm × 6.5 mm (4 Each) Key Size 5 mm × 7.5 mm (6 Each) Key Size 5 mm × 9 mm (6 Each) Key Size 6 mm × 9 mm (8 Each) Key Size 6 mm × 11 mm (4 Each) Key Size 8 mm × 11 mm (5 Each) Key Size 8 mm × 13 mm (4 Each) | Plastic Box | 000000000 | 000000 |
316 Stainless Steel | ||||
| 66 | Key Numbers 1, 2, 3, 211, 212, 213 (5 Each) Key Numbers 5, 6, 7, 8, 9, 61, 91 (4 Each) Key Numbers 11, A (3 Each) Key Number 15 (2 Each) | Plastic Box | 000000000 | 000000 |