以下是公制標準內螺紋(粗牙)的攻牙孔徑表,同時對照了相就對應的螺紋孔徑螺
紋孔徑和攻牙前孔徑是兩個概念哦,故名思意所謂螺紋孔徑指的是攻好牙的已經是內螺紋的它的內徑,而攻牙前孔徑,是指沒有攻牙之前即準備攻牙前的孔徑。
下面所說的攻牙徑都是指擠牙絲攻(即無屑絲攻),的攻牙徑,而不是車削絲攻(即切削絲攻),而如果你要用車削絲攻來攻牙,那它的攻牙徑參考螺紋孔徑即可
公制粗牙的攻牙前孔徑表及攻牙后孔徑表,單位MM | ||||
規格 | 攻牙后螺紋最小孔徑 | 攻牙后螺紋最大孔徑 | 攻牙前孔徑(擠牙絲攻) | |
M1*0.25 | 0.73 | 0.78 | 最小 | 最大 |
M1.1*0.25 | 0.83 | 0.89 | ||
M1.2*0.25 | 0.93 | 0.98 | ||
M1.4*0.3 | 1.08 | 1.14 | 1.23 | 1.26 |
M1.6*0.35 | 1.22 | 1.32 | ||
M1.7*0.35 | 1.33 | 1.42 | 1.5 | 1.55 |
M1.8*0.35 | 1.42 | 1.52 | ||
M2*0.4 | 1.57 | 1.67 | 1.77 | 1.83 |
M2.2*0.45 | 1.71 | 1.84 | 1.95 | 2.01 |
M2.3*0.4 | 1.87 | 1.97 | 2.07 | 2.13 |
M2.5*0.45 | 2.01 | 2.14 | 2.25 | 2.31 |
M2.6*0.45 | 2.12 | 2.23 | 2.35 | 2.41 |
M3*0.5 | 2.46 | 2.6 | 2.72 | 2.79 |
M3.5*0.6 | 2.85 | 3.01 | 3.16 | 3.24 |
M4*0.7 | 3.24 | 3.42 | 3.6 | 3.69 |
M4.5*0.75 | 3.69 | 3.88 | 4.07 | 4.17 |
M5*0.8 | 4.13 | 4.33 | 4.55 | 4.65 |
M6*1.0 | 4.92 | 5.15 | 5.43 | 5.55 |
M7*1.0 | 5.92 | 6.15 | 6.43 | 6.55 |
M8*1.25 | 6.65 | 6.91 | 7.29 | 7.42 |
M9*1.25 | 7.65 | 7.91 | 8.29 | 8.42 |
M10*1.5 | 8.38 | 8.68 | 9.15 | 9.3 |
M11*1.5 | 9.38 | 9.68 | 10.15 | 10.3 |
M12*1.75 | 10.11 | 10.44 | 11.01 | 11.19 |
M14*2.0 | 11.84 | 12.21 | ||
M16*2.0 | 13.84 | 14.21 |
公制細螺紋 內螺紋 鉆孔徑 | 公制細螺紋內螺紋 鉆孔徑 | ||||||
規 格 | 標準徑 | 攻牙前孔徑(擠牙絲攻) | 規 格 | 標準徑 | 攻牙前孔徑(擠牙絲攻) | ||
最大 | 最小 | 最大 | 最小 | ||||
M1.0×0.2 | 0.8 | 0.821 | 0.783 | M17×1.5 | 15.5 | 15.676 | 15.376 |
M1.1×0.2 | 0.9 | 0.921 | 0.883 | M17×1.0 | 16 | 16.153 | 15.917 |
M1.2×0.2 | 1 | 1.021 | 0.983 | M18×2.0 | 16 | 16.21 | 15.835 |
M1.4×0.2 | 1.2 | 1.221 | 1.183 | M18×1.5 | 16.5 | 16.676 | 16.376 |
M1.6×0.2 | 1.4 | 1.421 | 1.383 | M18×1.0 | 17 | 17.153 | 16.917 |
M1.7×0.2 | 1.45 | 1.5 | 1.46 | M20×2.0 | 18 | 18.21 | 17.835 |
M1.8×0.2 | 1.6 | 1.621 | 1.583 | M20×1.5 | 18.5 | 18.676 | 18.376 |
M2.0×0.25 | 1.75 | 1.785 | 1.729 | M20×1.0 | 19 | 19.153 | 18.917 |
M2.2×0.25 | 1.95 | 1.985 | 1.929 | M22×2.0 | 20 | 20.21 | 19.835 |
M2.3×0.25 | 2.05 | 2.061 | 2.001 | M22×1.5 | 20.5 | 20.676 | 20.376 |
M2.5×0.35 | 2.2 | 2.221 | 2.121 | M22×1.0 | 21 | 21.153 | 20.917 |
M2.6×0.35 | 2.2 | 2.246 | 2.186 | M24×2.0 | 22 | 22.21 | 21.835 |
M3.0×0.35 | 2.7 | 2.721 | 2.621 | M24×1.5 | 22.5 | 22.676 | 22.376 |
M3.5×0.35 | 3.2 | 3.221 | 3.121 | M24×1.0 | 23 | 23.153 | 22.917 |
M4.0×0.5 | 3.5 | 3.599 | 3.459 | M25×2.0 | 23 | 23.21 | 22.835 |
M4.5×0.5 | 4 | 4.099 | 3.959 | M25×1.5 | 23.5 | 23.676 | 23.376 |
M5.0×0.5 | 4.5 | 4.599 | 4.459 | M25×1.0 | 24 | 24.153 | 23.917 |
M5.5×0.5 | 5 | 5.099 | 4.959 | M26×1.5 | 24.5 | 24.676 | 24.376 |
M6.0×0.75 | 5.3 | 5.378 | 5.188 | M27×2.0 | 25 | 25.21 | 24.835 |
M6.0×0.5 | 5.5 | 5.55 | 5.4 | M27×1.5 | 25.5 | 25.676 | 25.376 |
M7.0×0.75 | 6.3 | 6.378 | 6.188 | M27×1.0 | 26 | 26.153 | 25.917 |
M7.0×0.5 | 6.5 | 6.55 | 6.4 | M28×2.0 | 26 | 26.21 | 25.835 |
M8.0×1.0 | 7 | 7.153 | 6.917 | M28×1.5 | 26.5 | 26.676 | 26.376 |
M8.0×0.75 | 7.3 | 7.378 | 7.188 | M28×1.0 | 27 | 27.153 | 26.917 |
M8.0×0.5 | 7.5 | 7.52 | 7.4 | M30×3.0 | 27 | 27.252 | 26.752 |
M9.0×1.0 | 8 | 8.153 | 7.917 | M30×2.0 | 28 | 28.21 | 27.835 |
M9.0×0.75 | 8.3 | 8.378 | 8.188 | M30×1.5 | 28.5 | 28.676 | 28.376 |
M10×1.25 | 8.8 | 8.912 | 8.647 | M30×1.0 | 29 | 29.153 | 28.917 |
M10×1.0 | 9 | 9.153 | 8.917 | M32×2.0 | 30 | 30.21 | 29.835 |
M10×0.75 | 9.3 | 9.378 | 9.188 | M32×1.5 | 30.5 | 30.676 | 30.376 |
M10×0.5 | 9.5 | 9.52 | 9.4 | M33×3.0 | 30 | 30.252 | 29.752 |
M11×1.0 | 10 | 10.153 | 9.917 | M33×2.0 | 31 | 31.21 | 30.835 |
M11×0.75 | 10.3 | 10.378 | 10.188 | M33×1.5 | 31.5 | 31.676 | 31.376 |
M12×1.5 | 10.5 | 10.676 | 10.376 | M36×3.0 | 33 | 33.252 | 32.752 |
M12×1.0 | 11 | 11.153 | 10.917 | M36×2.0 | 34 | 34.21 | 33.835 |
M12×0.5 | 11.5 | 11.52 | 11.4 | M36×1.5 | 34.5 | 34.676 | 34.376 |
M14×1.5 | 12.5 | 12.676 | 12.376 | M35×1.5 | 33.5 | 33.676 | 33.376 |
M14×1.0 | 13 | 13.153 | 12.917 | ||||
M15×1.5 | 13.5 | 13.676 | 13.376 | ||||
M15×1.0 | 14 | 14.153 | 13.917 | ||||
M16×1.5 | 14.5 | 14.676 | 14.376 | ||||
M16×1.0 | 15 | 15.153 | 14.91 |
規格 | 攻牙后螺紋最小孔徑 | 攻牙后螺紋最大孔徑 | 攻牙前最小孔徑(擠牙絲攻) | 攻牙前最大孔徑(擠牙絲攻) |
NO. 1-64UNC | 1.43 | 1.58 | 1.63 | 1.71 |
NO. 2-56UNC | 1.69 | 1.87 | 1.93 | 2.02 |
NO. 3-48UNC | 1.94 | 2.15 | 2.22 | 2.32 |
NO. 4-40UNC | 2.16 | 2.39 | 2.49 | 2.61 |
NO. 5-40UNC | 2.49 | 2.7 | 2.82 | 2.92 |
NO. 6-32UNC | 2.64 | 2.9 | 3.05 | 3.19 |
NO. 8-32UNC | 3.3 | 3.53 | 3.71 | 3.83 |
NO.10-24UNC | 3.68 | 3.96 | 4.23 | 4.37 |
NO.12-24UNC | 4.34 | 4.6 | 4.88 | 5.02 |
1/4 -20UNC | 4.98 | 5.26 | 5.63 | 5.77 |
5/16-18UNC | 6.4 | 6.73 | 7.13 | 7.3 |
3/8 -16UNC | 7.8 | 8.15 | 8.63 | 8.8 |
7/16-14UNC | 9.14 | 9.55 | 10.09 | 10.29 |
1/2 -13UNC | 10.59 | 11.02 | 11.6 | 11.82 |
9/16-12UNC | 11.99 | 12.45 | ||
5/8 -11UNC | 13.39 | 13.87 | ||
3/4 -10UNC | 16.31 | 16.84 | ||
7/8 -9 UNC | 19.18 | 19.76 | ||
1 -8 UNC | 21.97 | 22.61 |