ASME B18.3 TABLE 3 Standard Dimensioni per Hexagon and spline socket button head cap screws, inch series
Viti testa cilindrica bombata con esagono incassato
Disegni dimensionali e diagrammi tecnici
Dimensioni chiave e parametri tecnici
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Dimensions in inches - source ASME B18.3 table 3 - 2008 hex and spline socket button head cap screws |
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| d basic thread size | Nr of threads x inch | A max | H min | L max standard | T min | J hex socket | M spline socket | |||
| inches | mm | UNC | UNF | |||||||
| 0 (0.06) | 1.52 | - | 80 | 0.114 | 0.026 | 0.5 | 0.02 | 0.035 | 0.048 | |
| 1 (0.073) | 1.85 | 64 | 72 | 0.139 | 0.033 | 0.5 | 0.028 | 0.05 | 0.06 | |
| 2 (0.086) | 2.18 | 56 | 64 | 0.164 | 0.046 | 0.5 | 0.028 | 0.05 | 0.06 | |
| 3 (0.099) | 2.51 | 48 | 56 | 0.188 | 0.052 | 0.5 | 0.035 | 0.062 | 0.072 | |
| 4 (0.1129 | 2.84 | 40 | 48 | 0.213 | 0.059 | 0.5 | 0.035 | 0.062 | 0.072 | |
| 5 (0.125) | 3.18 | 40 | 44 | 0.238 | 0.066 | 0.5 | 0.044 | 0.078 | 0.096 | |
| 6 (0.138) | 3.51 | 32 | 40 | 0.262 | 0.073 | 0.63 | 0.044 | 0.078 | 0.096 | |
| 8 (0.164) | 4.17 | 32 | 36 | 0.312 | 0.087 | 0.750 | 0.052 | 0.094 | 0.111 | |
| 10 (0.19) | 4.83 | 24 | 32 | 0.361 | 0.101 | 1 | 0.07 | 0.125 | 0.145 | |
| 1/4 | 6.35 | 20 | 28 | 0.437 | 0.132 | 1 | 0.087 | 0.156 | 0.183 | |
| 5/16 | 7.94 | 18 | 24 | 0.547 | 0.166 | 1 | 0.105 | 0.188 | 0.216 | |
| 3/8 | 9.53 | 16 | 24 | 0.656 | 0.199 | 1 | 0.122 | 0.219 | 0.251 | |
| 1/2 | 12.70 | 13 | 20 | 0.875 | 0.265 | 2 | 0.175 | 0.312 | 0.372 | |
| 5/8 | 15.88 | 11 | 18 | 1 | 0.331 | 2 | 0.21 | 0.375 | 0.454 | |