Slotted Undercut Flat Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 13]
ASME B 18.6.4 - 1998 (R2005) 开槽沉头清根自攻螺钉 B,BP型 [Table 13]
See all versions and complete specifications: Slotted Undercut Flat Countersunk Head Tapping Screws - Type B and BP Thread Forming [Table 13] — Full Specification Page
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 0# | 0.0730 | 0.009 | 0.031 | 0.023 | 5/32 | 0.137 | 0.019 | 0.014 | 0.120 | 0.026 |
| 1# | 0.0990 | 0.012 | 0.042 | 0.033 | 7/32 | 0.187 | 0.027 | 0.019 | 0.167 | 0.035 |
| 2# | 0.1250 |
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| 0.016 |
| 0.053 |
| 0.043 |
| 1/4 |
| 0.237 |
| 0.035 |
| 0.024 |
| 0.215 |
| 0.043 |
| 3# | 0.1510 | 0.019 | 0.064 | 0.053 | 3/8 | 0.287 | 0.039 | 0.030 | 0.262 | 0.048 |
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