标准螺纹下孔孔径表 公制牙粗螺纹(60°) 称呼 M1x0.25 M1.1x0.25 M1.2x0.25 M1.4x0.3 M1.6x0.35 M1.7x0.35 M1.8x0.35 M2x0.4 M2.2x0.45 M2.3x0.4 M2.5x0.45 M2.6x0.45 M3x0.5 *M3x0.6 M3.5x0.6 M4x0.7 *M4x0.75 M4.5x0.75 M5x0.8 *M5x0.9 M6x1.0 M7x1.0 M8x1.25 M9x1.25 M10x1.5 M11x1.5 M12x1.75 M14x2.0 M16x2.0 M18x2.5 M20x2.5 M22x2.5 M24x3.0 M27x3.0 M30x3.5 M33x3.5 M36x4.0 标准径 0.75 0.85 0.95 1.1 1.25 1.35 1.45 1.6 1.75 1.9 2.1 2.2 2.5 2.4 2.9 3.3 3.25 3.8 4.2 4.1 5 6 6.8 7.8 8.5 9.5 10.3 12 14 15.5 17.5 19.5 21 24 26.5 29.5 32 铜、铁 D1-上限 0.8 0.9 1 1.16 1.34 1.44 1.54 1.7 1.86 2 2.16 2.26 2.62 2.47 3.04 3.45 3.35 3.9 4.36 4.2 5.18 6.18 6.95 7.95 8.7 9.7 10.5 12.26 14.26 15.8 17.8 19.8 21.3 24.3 26.8 29.8 32.35 D1-下限 0.76 0.86 0.96 1.11 1.29 1.39 1.49 1.65 1.81 1.95 2.11 2.21 2.57 2.42 2.98 3.39 3.29 3.84 4.3 4.14 5.12 6.12 6.89 7.89 8.6 9.6 10.4 12.15 14.15 15.65 17.65 19.65 21.15 24.15 26.6 29.6 32.1 不锈钢、铝 D1-上限 0.83 0.93 1.03 1.19 1.37 1.47 1.57 1.73 1.89 2.03 2.19 2.29 2.65 2.5 3.07 3.48 3.38 3.93 4.39 4.24 5.2 6.2 7 8 8.75 9.75 10.54 12.3 14.3 15.85 17.85 19.85 21.35 24.35 26.9 29.9 32.4 D1-下限 0.79 0.89 0.99 1.14 1.32 1.42 1.52 1.68 1.84 1.98 2.14 2.24 2.6 2.45 3.01 3.42 3.32 3.87 4.33 4.18 5.14 6.14 6.93 7.93 8.65 9.65 10.44 12.18 14.18 15.7 17.7 19.7 21.2 24.2 26.7 29.7 32.15 称呼 M1x0.2 M1.1x0.2 M1.2x0.2 M1.4x0.2 M1.6x0.2 *M1.7x0.2 M1.8x0.2 M2x0.25 M2.2x0.25 公制牙细螺纹(60°) 标准径 铜、铁 不锈钢、铝 D1-上限 D1-下限 D1-上限 D1-下限 0.8 0.9 1 1.2 1.4 1.45 1.6 1.75 1.95 0.84 0.94 1.04 1.24 1.44 1.52 1.64 1.81 2.01 2.08 2.25 2.27 2.74 3.24 3.62 4.12 4.62 5.12 5.4 5.57 6.4 6.57 7.17 7.4 7.55 8.18 8.4 8.95 9.18 9.4 9.55 10.2 10.4 10.73 10.95 11.2 11.57 0.8 0.9 1 1.2 1.4 1.48 1.6 1.77 1.97 2.04 2.2 2.23 2.7 3.2 3.55 4.05 4.55 5.05 5.32 5.5 6.32 6.5 7.08 7.32 7 8.1 8.32 8.85 9.08 9.32 9 10.1 10.32 10.6 10.83 11.1 11.5 0.86 0.96 1.06 1.26 1.46 1.54 1.66 1.83 2.03 2.1 2.27 2.29 2.77 3.27 3.65 4.15 4.65 5.15 5.43 5.6 6.43 6.6 7.2 7.43 7.57 8.2 8.43 9 9.23 9.45 9.58 10.25 10.45 10.78 11 11.25 11.62 0.82 0.92 1.02 1.22 1.42 1.5 1.62 1.79 1.99 2.06 2.22 2.25 2.72 3.22 3.58 4.08 4.58 5.08 5.35 5.53 6.35 6.53 7.1 7.35 7.52 8.02 8.35 8.9 9.13 9.37 9.53 10.15 10.37 10.65 10.88 11.15 11.55 *M2.3x0.25 2.05 M2.5x0.35 *M2.6x0.35 M3x0.35 M3.5x0.35 M4x0.5 M4.5x0.5 M5x0.5 M5.5x0.5 M6x0.75 *M6x0.5 M7x0.75 *M7x0.5 M8x1.0 M8x0.75 *M8x0.5 M9x1.0 M9x0.75 M10x1.25 M10x1.0 M10x0.75 *M10x0.5 M11x1.0 M11x0.75 M12x1.5 M12x1.25 M12x1.0 *M12x0.5 2.2 2.2 2.7 3.2 3.5 4 4.5 5 5.3 5.5 6.3 6.5 7 7.3 7.5 8 8.3 8.8 9 9.3 9.5 10 10.3 10.5 10.8 11 11.5 M39x4.0 M42x4.5 M45x4.5 M48x5.0 35 37.5 40.5 43 35.35 37.9 40.9 43.4 35.1 37.65 40.65 43.15 35.4 37.95 40.95 43.5 35.15 37.7 40.7 43.2 M14x1.5 M14x1.0 M15x1.5 M15x1.0 14.5 15 15.5 12.5 13 13.5 14 14.7 15.2 15.75 12.7 13.2 13.7 14.2 14.57 15.1 15.6 16.2 16.25 16.73 17.2 18.25 18.73 19.2 20.25 20.73 21.2 22.25 22.73 23.2 23.25 23.73 24.2 24.73 25.25 25.73 26.2 26.25 26.73 27.2 27.35 28.3 28.77 29.25 30.3 30.77 30.35 12.57 13.1 13.57 14.1 14.75 15.25 15.8 16.07 16.1 16.6 17.07 18.1 18.6 19.07 20.1 20.6 21.07 22.1 22.6 23.07 23.1 23.6 24.07 24.6 25.1 25.6 26.07 26.1 26.6 27.07 27.15 28.15 28.6 29.1 30.15 30.6 30.15 12.75 13.25 13.75 14.25 16.25 16.31 16.78 17.25 18.3 18.78 19.25 20.3 20.78 21.25 22.3 22.78 23.25 23.3 23.78 24.25 24.78 25.3 25.78 26.25 26.3 26.78 27.25 27.4 28.35 28.82 29.3 30.35 30.82 30.4 12.62 13.15 13.62 14.15 14.62 15.15 15.65 16.12 16.2 16.65 17.12 18.15 18.65 19.12 20.15 20.65 21.12 20.15 22.65 23.12 23.15 23.65 24.12 24.65 25.15 25.65 26.12 26.15 26.65 27.12 27.2 28.2 28.65 29.15 30.2 30.65 30.2 公制牙细螺纹(60°) 称 呼 M33x2.0 M33x1.5 M35x1.5 M36x3.0 M36x2.0 M36x1.5 M38x1.5 M39x3.0 M39x2.0 M39x1.5 M40x3.0 M40x2.0 M40x1.5 M42x4.0 M42x3.0 M42x2.0 M42x1.5 M45x4.0 M45x3.0 M45x2.0 M45x1.5 M48x4.0 M48x3.0 M48x2.0 M48x1.5 M50x3.0 M50x2.0 M50x1.5 标准径 31 31.5 33.5 33 34 34.5 36.5 36 37 37.5 37 38 38.5 38 39 40 40.5 41 42 43 43.5 44 45 46 46.5 47 48 48.5 D1-上限 31.3 31.77 33.77 33.35 34.3 34.77 36.77 36.35 37.3 37.77 37.35 38.3 38.77 38.37 39.35 40.3 40.77 41.37 42.35 43 43.77 44.37 45.35 46.3 46.77 47.35 48.3 48.77 铜、铁 D1-下限 31.1 31.6 33.6 33.15 34.1 34.6 36.6 36.15 37.1 37.6 37.15 38.1 38.6 38.15 39.15 40.1 40.6 41.15 42.15 43.1 43.6 44.15 45.15 46.1 46.6 47.15 48.1 48.6 不锈钢、铝 D1-上限 31.35 31.82 33.82 33.4 34.33 34.82 36.82 36.4 37.35 37.82 37.4 38.35 38.82 38.42 39.4 40.35 40.82 41.42 42.4 43.35 43.82 44.42 45.4 46.35 46.82 47.4 48.35 48.82 16 M18x2.0 M18x1.5 M18x1.0 M20x2.0 M20x1.5 M20x1.0 M22x2.0 M22x1.5 M22x1.0 M24x2.0 M24x1.5 M24x1.0 M25x2.0 M25x1.5 M25x1.0 M26x1.5 M27x2.0 M27x1.5 M27x1.0 M28x2.0 M28x1.5 M28x1.0 M30x3.0 M30x2.0 M30x1.5 M30x1.0 M32x2.0 M32x1.5 M33x3.0 16 16.5 17 18 18.5 19 20 20.5 21 22 22.5 23 23 23.5 24 24.5 25 25.5 26 26 26.5 27 27 28 28.5 29 30 30.5 30