Type IA Cross Recessed Undercut Flat Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 15]
ASME B 18.6.4 - 1998 (R2005) IA型米字槽沉头清根自攻螺钉 B,BP型 [Table 15]
See all versions and complete specifications: Type IA Cross Recessed Undercut Flat Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 15] — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0# | 0.0730 | 0.045 | 0 | 0.031 | 0.023 | 5/32 | 0.137 | 0.044 | 0.018 | 0.120 | 0.070 |
| 1# | 0.0990 | 0.053 | 1 | 0.042 | 0.033 | 7/32 | 0.187 | 0.055 |
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| 0.029 |
| 0.167 |
| 0.096 |
| 2# | 0.1250 | 0.079 | 1 | 0.053 | 0.043 | 1/4 | 0.237 | 0.081 | 0.030 | 0.215 | 0.122 |
| 3# | 0.1510 | 0.071 | 2 | 0.064 | 0.053 | 3/8 | 0.287 | 0.077 | 0.041 | 0.262 | 0.148 |
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