Cross Recessed Countersunk Head Tapping Screws - Threaded Portion are of Class 1 to 4 [Annex Attached Table 2]
JIS B 1122 (AAT2) - 1996 十字槽沉头自攻钉 - 螺纹型式：Class 1~Class 4 [附表2]
See all versions and complete specifications: Cross Recessed Countersunk Head Tapping Screws - Threaded Portion are of Class 1 to 4 — Full Specification Page
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 5 | 1.05 | 0.2 | 0.6 | 4.6 | 1.45 | 2.6 | 1.42 | 1.25 | 1 |
| 3 | 9 | 2.19 | 0.3 | 1.0 | 8.4 | 2.55 | 4.9 | 2.73 | 2.25 | 2 |
| 2.5 | 7 | 1.40 |
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| 0.25 |
| 0.8 |
| 6.5 |
| 2 |
| 4.1 |
| 1.93 |
| 1.7 |
| 2 |
| 3.5 | 12 | 2.70 | 0.4 | 1.4 | 11.3 | 3.4 | 6.7 | 3.26 | 3 | 3 |
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