Type I Cross Recessed Flat Countersunk Head Tapping Screws - Type C Thread Forming [Table 10]
ASME B 18.6.4 - 1998 (R2005) I型十字槽沉头自攻锁紧螺钉 C型 (统一螺纹) [Table 10]
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 | 0.045 | 0.061 | 0.059 | 0.100 | 7/32 | 0.187 | 0.018 | 1 | 0.167 | 0.060 |
| 3# | 0.1250 | 0.052 | 0.075 | 0.075 | 0.148 | 1/4 | 0.237 | 0.027 | 2 | 0.215 | 0.074 |
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| 4# | 0.1640 | 0.087 | 0.110 | 0.100 | 0.182 | 7/16 | 0.312 | 0.030 | 2 | 0.285 | 0.110 |
| 5# | 0.2160 | 0.116 | 0.139 | 0.132 | 0.262 | 9/16 | 0.412 | 0.035 | 3 | 0.380 | 0.144 |
| 6# | 0.3125 | 0.174 | 0.196 | 0.191 | 0.358 | 5/8 | 0.597 | 0.061 | 4 | 0.556 | 0.205 |
| 8# | 0.3750 | 0.203 | 0.225 | 0.230 | 0.386 | 5/8 | 0.717 | 0.065 | 4 | 0.670 | 0.234 |
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