 |
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| 单位：mm | |||||||||||
| 公称直径 d |
螺距P | b | dk | k | s | t min |
|||||
| max | min | max | min | max | min | ||||||
| M1.4 | 0.3 | 14 | 2.74 | 2.46 | 1.4 | 1.26 | 1.36 | 1.32 | 0.6 | ||
| M1.6 | 0.35 | 15 | 3.14 | 2.86 | 1.6 | 1.46 | 1.56 | 1.52 | 0.7 | ||
| M2 | 0.4 | 16 | 3.98 | 3.62 | 2 | 1.86 | 1.56 | 1.52 | 1 | ||
| M2.5 | 0.45 | 17 | 4.68 | 4.32 | 2.5 | 2.36 | 2.06 | 2.02 | 1.1 | ||
| M3 | 0.5 | 18 | 5.68 | 5.32 | 3 | 2.86 | 2.58 | 2.52 | 1.3 | ||
| M4 | 0.7 | 20 | 7.22 | 6.78 | 4 | 3.82 | 3.08 | 3.02 | 2 | ||
| M5 | 0.8 | 22 | 8.72 | 8.28 | 5 | 4.82 | 4.095 | 4.02 | 2.5 | ||
| M6 | 1 | 24 | 10.22 | 9.78 | 6 | 5.7 | 5.14 | 5.02 | 3 | ||
| M8 | 1.25/1 | 28 | 13.27 | 12.73 | 8 | 7.64 | 6.14 | 6.02 | 4 | ||
| M10 | 1.5/1.25/1 | 32 | 16.27 | 15.73 | 10 | 9.64 | 8.175 | 8.025 | 5 | ||
| M12 | 1.75/1.5/1.25 | 36 | 18.27 | 17.73 | 12 | 11.57 | 10.18 | 10.025 | 6 | ||
| M14 | 2/1.5 | 40 | 21.33 | 20.67 | 14 | 12.57 | 12.21 | 12.032 | 7 | ||
| M16 | 2/1.5 | 44 | 24.33 | 23.67 | 16 | 15.57 | 14.21 | 14.032 | 8 | ||
| M18 | 2.5/2/1.5 | 48 | 27.33 | 26.67 | 18 | 17.57 | 14.21 | 14.032 | 9 | ||
| M20 | 2.5/2/1.5 | 52 | 30.33 | 19.67 | 20 | 19.48 | 17.23 | 17.05 | 10 | ||
| M22 | 2.5/2/1.5 | 56 | 33.39 | 32.61 | 22 | 21.48 | 17.23 | 17.05 | 11 | ||
| M24 | 3/2 | 60 | 36.36 | 35.61 | 24 | 23.48 | 19.28 | 19.065 | 12 | ||
| M27 | 3/2 | 66 | 40.39 | 39.61 | 27 | 26.48 | 19.28 | 19.065 | 13.5 | ||
| M30 | 3.5/2 | 72 | 45.39 | 44.61 | 30 | 29.48 | 22.28 | 22.065 | 15.6 | ||
| 化学成分，%,max | ||||||||||
| 组别 | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | 特性 |
| 304-A2 | 0.1 | 1 | 2 | 0.05 | 0.03 | 15-20 | 8-19 | 4 |
加工硬化率适中，适于一般的冷间加工以及伸抽，冷加工性能较好，普遍用于外六角螺钉、螺母以及垫圈产品 |
|
| 316-A4 | 0.08 | 1 | 2 | 0.045 | 0.03 | 16-18.5 | 2-3 | 10-15 | 1 |
加钼，耐腐蚀能力较304强，特别适用于海水及化学介质，更加的耐腐蚀性及耐孔蚀性。 |
|
注： 1)如镍含量低于8%,则锰的最小含量必须为5% |
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