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| Nominal Size | D | A | H | S | J | K | Fillet Radius | T | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Basi Screw Diameter | Head Diameter | Head Height | Head Side Height | Hexagon Socket Size | Key Engagement | F | da | Thread length | |||
| Max. | Min. | Max. | Min. | Ref. | Nom. | Min. | Min. | Max. | Min. | ||
| 0 | 0.0600 | 0.114 | 0.104 | 0.032 | 0.026 | 0.010 | 0.035 | 0.020 | 0.005 | 0.080 | 1/2 |
| 1 | 0.0730 | 0.139 | 0.129 | 0.039 | 0.033 | 0.010 | 0.050 | 0.028 | 0.005 | 0.093 | 1/2 |
| 2 | 0.0860 | 0.164 | 0.154 | 0.046 | 0.038 | 0.010 | 0.050 | 0.0228 | 0.005 | 0.106 | 1/2 |
| 3 | 0.0990 | 0.188 | 0.176 | 0.052 | 0.044 | 0.010 | 1/16 | 0.035 | 0.005 | 0.119 | 1/2 |
| 4 | 0.1120 | 0.213 | 0.201 | 0.059 | 0.051 | 0.015 | 1/16 | 0.035 | 0.005 | 0.132 | 1/2 |
| 5 | 0.1250 | 0.238 | 0.226 | 0.066 | 0.058 | 0.015 | 5/64 | 0.044 | 0.005 | 0.145 | 0.1/2 |
| 6 | 0.1380 | 0.262 | 0.250 | 0.073 | 0.063 | 0.015 | 5/64 | 0.044 | 0.005 | 0.158 | 5/8 |
| 8 | 0.1640 | 0.312 | 0.298 | 0.087 | 0.077 | 0.015 | 3/32 | 0.052 | 0.010 | 0.194 | 3/4 |
| 10 | 0.1900 | 0.361 | 0.347 | 0.101 | 0.091 | 0.020 | 1/8 | 0.070 | 0.010 | 0.220 | 1 |
| 1/4 | 0.2500 | 0.437 | 0.419 | 0.132 | 0.122 | 0.031 | 5/32 | 0.087 | 0.015 | 0.290 | 1 |
| 5/16 | 0.3125 | 0.547 | 0.527 | 0.166 | 0.152 | 0.031 | 3/16 | 0.105 | 0.015 | 0.352 | 1 |
| 3/8 | 0.3750 | 0.656 | 0.636 | 0.199 | 0.185 | 0.031 | 7/32 | 0.122 | 0.015 | 0.415 | 1.1/4 |
| 1/2 | 0.5000 | 0.875 | 0.851 | 0.265 | 0.245 | 0.046 | 5/16 | 0.175 | 0.020 | 0.560 | 2 |
| 5/8 | 0.6250 | 1.000 | 0.970 | 0.331 | 0.311 | 0.062 | 3/8 | 0.210 | 0.020 | 0.685 | 2 |