SJ 2838 - 1987 十字槽大球面头自攻螺钉和平垫圈组合
See all versions and complete specifications: Tapping Screw and Washer Assemblies — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST3 | 1.41 | 1.35 | 1.93 | 2.55 | 1.41 | 8.5 | 8 | 2 | 4 | 2.85 | 3.7 |
| ST4.0 | 1.59 | 2.14 | 2.73 | 3.25 | 1.59 | 10.6 | 10 | 2 | 4.8 | 3.55 | 4.3 |
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