BS Woodruff Keys and Keyways - Table 3 |
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| BS Key No | Diameter of Key | Depth of Key | Thickness of Key | Width of Keyway in Shaft | Width of Keyway in Hub or Boss | Depth of Keyway in Shaft | Depth of Keyway in Hub @ C/Line | Corresponding BS Woodruff Key Cutter |
| +0.00" -0.005" | +0.00" -0.005" | +0.00" -0.001" | -0.00" +0.001" | -0.00" +0.001" | -0.00" +0.005" | -0.00" +0.005" |
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| 10 | 0.500" | 0.203" | 0.0635" | 0.0615" | 0.0635" | 0.1668" | 0.042" | 1 |
| 20 | 0.500" | 0.203" | 0.0948" | 0.0928" | 0.0948" | 0.1511" | 0.057" | 2 |
| 30 | 0.500" | 0.203" | 0.1260" | 0.1240" | 0.1260" | 0.1355" | 0.073" | 3 |
| 40 | 0.625" | 0.250" | 0.0948" | 0.0928" | 0.0948" | 0.1981" | 0.057" | 4 |
| 50 | 0.625" | 0.250" | 0.1260" | 0.1240" | 0.1260" | 0.1825" | 0.073" | 5 |
| 60 | 0.625" | 0.250" | 0.1573" | 0.1553" | 0.1573" | 0.1669" | 0.089" | 6 |
| 70 | 0.750" | 0.313" | 0.1260" | 0.1240" | 0.1260" | 0.2455" | 0.073" | 7 |
| 80 | 0.750" | 0.313" | 0.1573" | 0.1553" | 0.1573" | 0.2299" | 0.089" | 8 |
| 90 | 0.750" | 0.313" | 0.1885" | 0.1865" | 0.1885" | 0.2143" | 0.104" | 9 |
| 100 | 0.875" | 0.375" | 0.1573" | 0.1553" | 0.1573" | 0.2919" | 0.089" | 10 |
| 110 | 0.875" | 0.375" | 0.1885" | 0.1865" | 0.1885" | 0.2763" | 0.104" | 11 |
| 115 | 0.875" | 0.375" | 0.2510" | 0.2490" | 0.2510" | 0.2450" | 0.16" | A |
| 130 | 1.000" | 0.438" | 0.1885" | 0.1865" | 0.1885" | 0.3393" | 0.104" | 13 |
| 150 | 1.000" | 0.438" | 0.2510" | 0.2490" | 0.2510" | 0.3080" | 0.136" | 15 |
| 155 | 1.000" | 0.438" | 0.3135" | 0.3115" | 0.3135" | 0.2768" | 0.167" | B |
| 160 | 1.125" | 0.484" | 0.1885" | 0.1865" | 0.1885" | 0.3853" | 0.104" | 16 |
| 180 | 1.125" | 0.484" | 0.2510" | 0.2490" | 0.2510" | 0.3540" | 0.136" | 18 |
| 185 | 1.125" | 0.484" | 0.3135" | 0.3115" | 0.3135" | 0.3228" | 0.167" | C |
| 210 | 1.250" | 0.547" | 0.2510" | 0.2490" | 0.2510" | 0.4170" | 0.136" | 21 |
| 215 | 1.250" | 0.547" | 0.3135" | 0.3115" | 0.3135" | 0.3858" | 0.167" | D |
| 225 | 1.250" | 0.547" | 0.3760" | 0.3740" | 0.3760" | 0.3545" | 0.198" | E |
| 230 | 1.375" | 0.594" | 0.3135" | 0.3115" | 0.3135" | 0.4328" | 0.167" | 23 |
| 235 | 1.375" | 0.594" | 0.3760" | 0.3740" | 0.3760" | 0.4015" | 0.198" | F |
| 240 | 1.500" | 0.641" | 0.2510" | 0.2490" | 0.2510" | 0.5110" | 0.136" | 24 |
| 250 | 1.500" | 0.641" | 0.3135" | 0.3115" | 0.3135" | 0.4798" | 0.167" | 25 |
| 255 | 1.500" | 0.641" | 0.3760" | 0.3740" | 0.3760" | 0.4485" | 0.198" | G |