Hexagon Socket Head Cap Screws BS 2470
Nominal Size | D | A | H | S | J | K | W | Fillet radius | C | T | ||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Body diameter | Head diameter | Head height | Head side height | Hexagon socket size* | Key engagement | Wall thickness | F | da | Chamfer or radius | Thread length | ||||
Max. | Min. | Max. | Min. | Max. | Min. | Min. | Nom. | Min. | Min. | Min. | Max. | Max. | Min. | |
0 | 0.0600 | 0.0568 | 0.096 | 0.091 | 0.060 | 0.057 | 0.054 | 0.050 | 0.025 | 0.020 | 0.003 | 0.074 | 0.003 | 0.500 |
1 | 0.0730 | 0.0695 | 0.118 | 0.112 | 0.073 | 0.070 | 0.066 | 0.050 | 0.031 | 0.025 | 0.003 | 0.087 | 0.003 | 0.625 |
2 | 0.0860 | 0.0822 | 0.140 | 0.134 | 0.086 | 0.083 | 0.077 | 1/16 | 0.038 | 0.029 | 0.004 | 0.102 | 0.003 | 0.625 |
3 | 0.0990 | 0.0949 | 0.161 | 0.154 | 0.099 | 0.095 | 0.089 | 5/64 | 0.044 | 0.034 | 0.004 | 0.115 | 0.003 | 0.625 |
4 | 0.1120 | 0.1075 | 0.183 | 0.176 | 0.112 | 0.108 | 0.101 | 5/64 | 0.051 | 0.038 | 0.005 | 0.130 | 0.005 | 0.750 |
5 | 0.1250 | 0.1202 | 0.205 | 0.198 | 0.125 | 0.121 | 0.112 | 3/32 | 0.057 | 0.043 | 0.006 | 0.145 | 0.005 | 0.750 |
6 | 0.1380 | 0.1329 | 0.226 | 0.218 | 0.138 | 0.134 | 0.124 | 3/32 | 0.064 | 0.047 | 0.006 | 0.158 | 0.005 | 0.750 |
8 | 0.1640 | 0.1585 | 0.270 | 0.262 | 0.164 | 0.159 | 0.148 | 1/8 | 0.077 | 0.056 | 0.007 | 0.188 | 0.005 | 0.875 |
10 | 0.1900 | 0.1840 | 0.312 | 0.303 | 0.190 | 0.185 | 0.171 | 5/32 | 0.090 | 0.065 | 0.009 | 0.218 | 0.005 | 0.875 |
1/4 | 0.2500 | 0.2435 | 0.375 | 0.365 | 0.250 | 0.244 | 0.225 | 3/16 | 0.120 | 0.095 | 0.009 | 0.278 | 0.008 | 1.000 |
5/16 | 0.3125 | 0.3053 | 0.437 | 0.425 | 0.312 | 0.306 | 0.281 | 7/32 | 0.151 | 0.119 | 0.012 | 0.3465 | 0.008 | 1.125 |
3/8 | 0.3750 | 0.3678 | 0.562 | 0.550 | 0.375 | 0.368 | 0.337 | 5/16 | 0.182 | 0.143 | 0.015 | 0.415 | 0.008 | 1.250 |
7/16 | 0.4375 | 0.4294 | 0.625 | 0.611 | 0.437 | 0.430 | 0.394 | 5/16 | 0.213 | 0.166 | 0.018 | 0.4835 | 0.010 | 1.375 |
1/2 | 0.5000 | 0.4919 | 0.750 | 0.735 | 0.500 | 0.492 | 0.450 | 3/8 | 0.245 | 0.190 | 0.020 | 0.552 | 0.010 | 1.500 |
5/8 | 0.6250 | 0.6163 | 0.875 | 0.858 | 0.625 | 0.616 | 0.562 | 1/2 | 0.307 | 0.238 | 0.024 | 0.689 | 0.010 | 1.750 |
3/4 | 0.7500 | 0.7406 | 1.000 | 0.982 | 0.750 | 0.740 | 0.675 | 9/16 | 0.370 | 0.285 | 0.030 | 0.828 | 0.010 | 2.000 |
7/8 | 0.8750 | 0.8647 | 1.125 | 1.105 | 0.875 | 0.864 | 0.787 | 9/16 | 0.432 | 0.333 | 0.034 | 0.963 | 0.015 | 2.250 |
1 | 1.0000 | 0.9886 | 1.312 | 1.291 | 1.000 | 0.988 | 0.900 | 5/8 | 0.495 | 0.380 | 0.040 | 1.100 | 0.015 | 2.500 |