Type I Cross Recessed Flat Countersunk Head Tapping Screws - Type C Thread Forming [Table 11]
ASME B 18.6.4 - 1998 (R2005) IA型米字槽沉头自攻锁紧螺钉 C型(统一螺纹) [Table 11]
See all versions and complete specifications: Type I Cross Recessed Flat Countersunk Head Tapping Screws - Type C Thread Forming [Table 11] — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 0.042 | 0.058 | 0.059 | 0.100 | 7/32 | 0.187 | 0.029 | 1 | 0.167 | 0.060 |
| 3# | 0.1250 | 0.053 | 0.071 | 0.075 | 0.148 | 1/4 | 0.237 | 0.041 | 2 | 0.215 | 0.077 |
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| 4# | 0.1640 | 0.089 | 0.107 | 0.100 | 0.182 | 7/16 | 0.312 | 0.041 | 2 | 0.285 | 0.112 |
| 5# | 0.2160 | 0.118 | 0.136 | 0.132 | 0.262 | 9/16 | 0.412 | 0.056 | 3 | 0.380 | 0.149 |
| 6# | 0.3125 | 0.175 | 0.193 | 0.191 | 0.358 | 5/8 | 0.597 | 0.086 | 4 | 0.556 | 0.211 |
| 8# | 0.3750 | 0.204 | 0.222 | 0.230 | 0.386 | 5/8 | 0.717 | 0.086 | 4 | 0.670 | 0.239 |
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