機械螺絲規格表
機械牙螺絲是一種以公制單位（毫米mm）為單位進行測量的螺絲系統，例如M6或M8螺絲。螺紋分為粗牙與細牙，可依照應用範圍選擇適合的螺紋，粗牙的牙距大，每一牙的牙底較大，強度較強，適合一般鎖附；細牙的牙距小，每一牙的牙底較小，強度雖差但密合度較佳。機械牙螺紋系統在全球各產業中用途廣泛，也是製造和工業應用中最常見的螺絲規格。
機械螺絲規格表的編制主要依據國際標準，例如ISO、DIN、JIS等。除了基本的尺寸和強度外，還包含了螺絲的形狀、頭型、螺紋類型等更詳細的內容，可以幫助使用者更好地選擇螺絲的材料和表面處理方式等，滿足特定的產品應用需求，確保鎖附的安全性和可靠性。
| M/M MACHINE SCREW 2A Q (60°) - COARSE THREAD 米厘牙規格(粗牙) | ||||||
|---|---|---|---|---|---|---|
| 規格 SIZE | 牙距 P | 外徑(D) | 輾造徑(d) | (B) 牙山 膨漲數 | ||
| 最大 (MAX) | 最小 (MIN) | 最大 (MAX) | 最小 (MIN) | |||
| M2 | 0.4 | 1.980 | 1.890 | 1.70 | 1.67 | 0.250 |
| 2.3 | 0.4 | 2.280 | 2.190 | 2.00 | 1.97 | 0.250 |
| 2.6 | 0.45 | 2.580 | 2.480 | 2.26 | 2.23 | 0.281 |
| 3 | 0.5 | 2.980 | 2.870 | 2.63 | 2.60 | 0.313 |
| 3.5 | 0.6 | 3.470 | 3.360 | 3.06 | 3.03 | 0.375 |
| 4 | 0.7 | 3.978 | 3.838 | 3.49 | 3.45 | 0.438 |
| 4.5 | 0.75 | 4.470 | 4.340 | 3.96 | 3.92 | 0.468 |
| 5 | 0.8 | 4.976 | 4.826 | 4.43 | 4.38 | 0.500 |
| 6 | 1.0 | 5.970 | 5.820 | 5.30 | 5.25 | 0.625 |
| 7 | 1.0 | 6.970 | 6.820 | 6.30 | 6.25 | 0.625 |
| 8 | 1.25 | 7.960 | 7.790 | 7.12 | 7.07 | 0.782 |
| 9 | 1.25 | 8.960 | 8.790 | 8.12 | 8.07 | 0.782 |
| 10 | 1.5 | 9.960 | 9.770 | 8.97 | 8.91 | 0.940 |
| 11 | 1.5 | 10.968 | 10.732 | 9.97 | 9.91 | 0.940 |
| 12 | 1.75 | 11.950 | 11.760 | 10.79 | 10.73 | 1.094 |
| 14 | 2.0 | 13.950 | 13.740 | 12.63 | 12.56 | 1.264 |
| 16 | 2.0 | 15.950 | 15.740 | 14.63 | 14.56 | 1.264 |
| 18 | 2.5 | 17.950 | 17.710 | 16.31 | 16.23 | 1.560 |
| 20 | 2.5 | 19.950 | 19.710 | 18.31 | 18.23 | 1.560 |
| 22 | 2.5 | 21.950 | 21.710 | 20.31 | 20.23 | 1.560 |
| 24 | 3.0 | 23.940 | 23.680 | 21.98 | 21.90 | 1.870 |
| 27 | 3.0 | 26.940 | 26.680 | 24.98 | 24.89 | 1.870 |
| 30 | 3.5 | 29.940 | 29.660 | 27.66 | 27.56 | 2.190 |
| 33 | 3.5 | 32.940 | 32.660 | 30.65 | 30.56 | 2.190 |
| 36 | 4.0 | 35.930 | 35.630 | 33.33 | 33.23 | 2.500 |
| M/M MACHINE SCREW 2A Q (60°) - FINE THREAD 米厘牙規格 (細牙) | ||||||
|---|---|---|---|---|---|---|
| 規格 SIZE | 牙距 P | 外徑(D) | 輾造徑(d) | (B) 牙山 膨漲數 | ||
| 最大 (MAX) | 最小 (MIN) | 最大 (MAX) | 最小 (MIN) | |||
| M4 | 0.5 | 3.980 | 3.874 | 3.61 | 3.57 | 0.313 |
| 4.5 | 0.5 | 4.480 | 4.374 | 4.11 | 4.07 | 0.313 |
| 5 | 0.50 | 4.980 | 4.874 | 4.61 | 4.57 | 0.313 |
| 6 | 0.8 | 5.978 | 5.838 | 5.45 | 5.41 | 0.468 |
| 7 | 0.8 | 6.978 | 6.838 | 6.45 | 6.41 | 0.468 |
| 8 | 1.0 | 7.974 | 7.794 | 7.29 | 7.24 | 0.625 |
| 9 | 1.00 | 8.974 | 8.794 | 8.29 | 8.24 | 0.625 |
| 10 | 1.3 | 9.972 | 9.760 | 9.12 | 9.07 | 0.782 |
| 10 | 1.0 | 9.974 | 9.794 | 9.28 | 9.23 | 0.625 |
| 12 | 1.3 | 11.972 | 11.760 | 11.12 | 11.07 | 0.782 |
| 12 | 1.50 | 11.968 | 11.732 | 10.95 | 10.89 | 0.940 |
| 14 | 1.50 | 13.968 | 13.732 | 12.95 | 12.89 | 0.940 |
| 16 | 1.5 | 15.968 | 15.732 | 14.95 | 14.89 | 0.940 |
| 18 | 2.0 | 17.962 | 17.682 | 16.62 | 16.54 | 1.264 |
| 18 | 1.50 | 17.968 | 17.732 | 16.93 | 16.86 | 0.940 |
| 20 | 2.0 | 19.962 | 19.682 | 18.62 | 18.54 | 1.264 |
| 20 | 1.5 | 19.968 | 19.732 | 18.92 | 18.85 | 0.940 |
| 22 | 1.5 | 21.968 | 21.732 | 20.92 | 20.85 | 0.940 |
| 24 | 1.5 | 23.968 | 23.732 | 22.92 | 22.85 | 0.940 |
| 26 | 1.5 | 25.968 | 25.732 | 24.93 | 24.85 | 0.940 |
| 27 | 1.5 | 26.968 | 26.732 | 25.93 | 25.85 | 0.940 |
| 28 | 1.5 | 27.968 | 27.732 | 26.93 | 26.85 | 0.940 |
| 30 | 1.5 | 29.968 | 29.732 | 28.93 | 28.85 | 0.940 |
| 32 | 1.5 | 31.968 | 31.732 | 30.93 | 30.85 | 0.940 |
| 33 | 1.5 | 32.968 | 32.732 | 31.93 | 31.85 | 0.940 |