46 六角法兰面自攻螺钉GB/T 16824.2—1997标准
六角法兰面自攻螺钉GB16824.2—1997标准
六角法兰面自攻螺钉的尺寸规格见表4.2-106。
表4.2-106 六角法兰面自攻螺钉的尺寸规格（mm)
| 螺纹规格 | ST2.2 | ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | ST8 | ST9.5 | |
| P | 0.8 | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | 2.1 | 2.1 | |
| a | max | 0.8 | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | 2.1 | 2.1 |
| dc | max | 4.5 | 6.4 | 7.5 | 8.5 | 10 | 11.2 | 12.8 | 16.8 | 21 |
| min | 4.1 | 5.9 | 6.9 | 7.8 | 9.3 | 10.3 | 11.8 | 15.5 | 19.3 | |
| c min | 0.3 | 0.4 | 0.5 | 0.6 | 0.6 | 0.8 | 1 | 1.2 | 1.4 | |
| S | 公称=max | 3 | 4 | 5 | 5.5 | 7 | 7 | 8 | 10 | 13 |
| min | 2.86 | 3.82 | 4.82 | 5.32 | 6.78 | 6.78 | 7.78 | 9.78 | 12.73 | |
| e min | 3.16 | 4.27 | 5.36 | 5.92 | 7.55 | 7.55 | 8.66 | 10.89 | 14.16 | |
| K | max | 2.2 | 3.2 | 3.8 | 4.3 | 5.2 | 6 | 6.7 | 8.6 | 10.7 |
| K’ min | 0.85 | 1.25 | 1.6 | 1.8 | 2.2 | 2.5 | 2.8 | 3.7 | 4.6 | |
| r1 min | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.4 | 0.4 | |
| r2 max | 0.1 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | 0.5 | 0.6 | |
| y参考 | C型 | 2 | 2.6 | 3.2 | 3.7 | 4.3 | 5 | 6 | 7.5 | 8 |
| F型 | 1.6 | 2.1 | 2.5 | 2.8 | 3.2 | 3.6 | 3.6 | 4.2 | 4.2 | |
| l① 商品规格范围 | 4.5~16 | 6.5〜19 | 9.5~22 | 9.5〜25 | 9.5〜32 | 13 ~38 | 13 ~38 | 16〜50 | 19〜50 | |
①公称长度系列为4.5、6.5、9.5、13-25(3进级）、32、38、45、50 mm。