Slotted Undercut Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 24]
ASME B 18.6.4 - 1998 (R2005) 开槽半沉头清根自攻螺钉 C型(统一螺纹) [Table 24]
See all versions and complete specifications: Slotted Undercut Oval Countersunk Head Tapping Screws - Type C Thread Forming [Table 24] — 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 | 0.047 | 0.027 | 0.042 | 0.033 | 7/32 | 0.187 | 0.059 | 0.035 | 0.167 | 0.075 |
| 3# | 0.1250 | 0.059 | 0.035 | 0.053 | 0.041 | 1/4 | 0.237 | 0.076 | 0.043 | 0.215 | 0.094 |
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| 4# | 0.1640 | 0.078 | 0.045 | 0.070 | 0.052 | 7/16 | 0.312 | 0.101 | 0.054 | 0.285 | 0.123 |
| 5# | 0.2160 | 0.103 | 0.056 | 0.092 | 0.068 | 9/16 | 0.412 | 0.135 | 0.067 | 0.380 | 0.161 |
| 6# | 0.3125 | 0.149 | 0.072 | 0.134 | 0.099 | 5/8 | 0.597 | 0.198 | 0.084 | 0.556 | 0.232 |
| 8# | 0.3750 | 0.179 | 0.081 | 0.161 | 0.117 | 5/8 | 0.717 | 0.239 | 0.094 | 0.670 | 0.278 |
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