Metric Hexagon Head Tapping Screws and Spring Washer Assemblies-SEMS (Screws Having Tapping Screw Thread Diameter)
ASME/ANSI B 18.13.1M - 2011 米制六角头平尾自攻钉和弹垫组合件 SEMS[Table 2]
See all versions and complete specifications: Metric Hexagon Head Tapping Screws and Spring Washer Assemblies-SEMS (Screws Having Tapping Screw Thread Diameter) — Full Specification Page
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| ST2.9 | 1.3 | 2.30 | 5.66 | 5.33 | 3.08 | 2.95 | 5.32 | 2.60 | 0.79 | 5.50 |
| ST3.5 | 1.6 | 3.30 | 7.47 | 7.10 | 4.11 | 3.96 | 7.78 | 3.80 | 1.19 | 8.00 |
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| ST4.2 | 1.8 | 4.10 | 11.26 | 10.85 | 5.52 | 5.31 | 9.78 | 4.70 | 1.57 | 10.00 |
| ST4.8 | 2.1 | 6.50 | 15.95 | 15.54 | 8.59 | 8.38 | 15.73 | 7.50 | 2.39 | 16.00 |
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