Regular and Large Hex Head Tapping Screws - Type C Thread Forming [Table 39]
ASME B 18.6.4 - 1998 (R2005) 六角头自攻螺钉 C型(统一螺纹) [Table 39]
See all versions and complete specifications: Regular and Large Hex Head Tapping Screws - Type C Thread Forming [Table 39] — Full Specification Page
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 4# | 0.1250 | 0.244 | 0.202 | 0.188 | 0.181 | 0.070 | 0.058 | 0.250 | 0.272 |
| 5# | 0.1640 | 0.305 | 0.272 | 0.250 | 0.244 | 0.110 | 0.096 | 0.312 | 0.340 |
| 6# | 0.2160 | 0.367 | 0.340 | 0.312 | 0.305 |
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| 0.155 |
| 0.139 |
| 0.375 |
| 0.409 |
| 8# | 0.3125 | — | 0.545 | 0.500 | 0.489 | 0.230 | 0.208 | — | — |
| 10# | 0.4375 | — | 0.682 | 0.625 | 0.610 | 0.348 | 0.321 | — | — |
| 12# | 0.5000 | — | 0.820 | 0.750 | 0.735 | 0.400 | 0.367 | — | — |
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