Two-thread Countersunk (Flat) Head Tapping Screws with Cross Rocessed for Plastics
UNI 9709 - 1990 塑料用双螺纹十字槽沉头(平头)自攻螺钉
See all versions and complete specifications: Two-thread Countersunk (Flat) Head Tapping Screws with Cross Rocessed for Plastics — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 3 | 3.65 | 2.4 | 2.6 | 2.15 | 1.85 | 3.35 | 2.89 | 1.8 | 2.5 | 2.59 | 2 |
| 4 | 5.6 | 3.9 | 4.3 | 3.5 | 3.2 | 5.3 | 4.44 | 3.05 | 3 | 4.14 | 3.25 |
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| 3.5 |
| 4.65 |
| 3 |
| 3.2 |
| 2.65 |
| 2.35 |
| 4.35 |
| 3.59 |
| 2.3 |
| 2.8 |
| 3.29 |
| 2.5 |
| 4.5 | 7.15 | 4.2 | 5.8 | 4.85 | 4.55 | 6.85 | 5.89 | 4.35 | 3.5 | 5.59 | 4.6 |
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