螺纹孔径对照表

无屑丝攻英制粗牙(W)
规格
W1/16 -60 W3/32 -48 W1/8 -40 W5/32 -32 W3/16 -24 W7/32 -24 W1/4 -20 W5/16 -18 W3/8 -16 W7/16 -14 W1/2 -12
下孔径
1.40 2.10 2.85 3.55 4.25 5.05 5.75 7.30 8.80 10.30 11.75
1.26 1.05 1.97 1.70 2.69 2.36 3.36 2.95 3.95 3.41 4.74 4.20 5.37 4.72 6.85 6.13 8.31 7.49 9.72 8.79 11.07 9.99 12.66 11.58 14.10 12.92 17.10 15.80 20.06 18.61 22.96 21.33 25.79 23.93 28.96 27.10 31.67 29.50 34.85 32.68 37.37 34.77 40.55 37.94 43.29 40.40 46.46 43.57
ห้องสมุดไป่ตู้
17.40 16.30
20.39 19.17
23.34 21.96
29.39 27.82
32.18 30.34
35.35 33.52
41.15 38.95
47.13 44.69
美制细牙(UNF)
规格 下孔径
Nr.0 -80
Nr.1 -72
Nr.2 -64
Nr.3 -56
Nr.4 -48
Nr.5 -44
-20
5.75
-18
7.30
-16
8.80
-14 10.30
-13 11.80
下孔径(%)
60% 100%
1.73
1.64
2.04
1.94
2.34
2.23
2.64
2.50
2.97
2.83
3.25
3.08
3.91
3.74
4.48
4.25
5.14
4.91
5.94
5.66
下孔径(%) 60% 100%
0.87 0.78 0.97 0.88 1.07 0.98 1.27 1.18 1.47 1.38 1.67 1.58 1.84 1.73 2.07 1.93 2.27 2.12 2.77 2.62 3.27 3.12 3.68 3.46 4.18 3.96 4.68 4.46 5.18 4.96 5.68 5.46 5.51 5.19 6.51 6.19 7.51 7.19 7.35 6.92 8.35 7.92 9.51 9.19 9.35 8.92 9.19 8.65 10.35 9.92 11.51 11.19 11.35 10.92 11.19 10.65 11.03 10.38 13.35 12.92 13.19 12.65 13.03 12.38 14.35 13.92 14.19 13.65 14.03 13.38 15.35 14.92 15.19 14.65 15.03 14.38 17.35 16.92 17.19 16.65 17.03 16.38 16.70 15.83 19.35 18.92 19.19 18.65 19.03 18.38 18.70 17.83 21.35 20.92 21.19 20.65
英制粗牙(W)
规格
W1/16 W3/32 W1/8 W5/32 W3/16 W7/32 W1/4 W5/16 W3/8 W7/16 W1/2 W9/16 W5/8 W3/4 W7/8 W1 W11/8 W11/4 W13/8 W11/2 W15/8 W13/4 W17/8 W2
-60 -48 -40 -32 -24 -24 -20 -18 -16 -14 -12 -12 -11 -10 -9 -8 -7 -7 -6 -6 -5 -5 -4.5 -4.5
下孔径(%) 60% 100%
1.32 1.18 1.62 1.47 1.93 1.75 2.22 2.02 2.50 2.27 2.80 2.55 3.09 2.82 3.71 3.40 4.31 3.97 4.90 4.50 5.76 5.37 7.25 6.79 8.84 8.38 10.29 9.74 11.88 11.33 13.37 12.76 14.96 14.35 18.02 17.33 21.05 20.26 24.03 23.11 27.20 26.28 30.38 29.46 33.35 32.63 36.73 35.81
下孔径
1.20 1.80 2.60 3.10 3.60 4.50 5.10 6.50 7.90 9.30 10.50 12.00 13.50 16.50 19.25 22.00 24.75 27.75 30.20 33.50 35.50 38.50 41.50 44.50
下孔径(%) 60% 100%
下孔径(%)
60% 100%
1.60
1.42
1.89
1.69
2.17
1.94
2.43
2.16
2.76
2.49
2.99
2.65
3.65
3.31
4.14
3.68
4.80
4.34
5.53
4.98
7.02
6.41
8.49
7.81
9.93
9.15
11.43 10.58
12.91 12.00
14.38 13.38
公制细牙(M)
规格 下孔径
M1 ×0.2 M1.1 ×0.2 M1.2 ×0.2 M1.4 ×0.2 M1.6 ×0.2 M1.8 ×0.2 M2 ×0.25 M2.2 ×0.25 M2.5 ×0.35 M3 ×0.35 M3.5 ×0.35 M4 ×0.5 M4.5 ×0.5 M5 ×0.5 M5.5 ×0.5 M6 ×0.5 M6 ×0.75 M7 ×0.75 M8 ×0.75 M8 ×1.0 M9 ×1.0 M10 ×0.75 M10 ×1.0 M10 ×1.25 M11 ×1.0 M12 ×0.75 M12 ×1.0 M12 ×1.25 M12 ×1.5 M14 ×1.0 M14 ×1.25 M14 ×1.5 M15 ×1.0 M15 ×1.25 M15 ×1.5 M16 ×1.0 M16 ×1.25 M16 ×1.5 M18 ×1.0 M18 ×1.25 M18 ×1.5 M18 ×2.0 M20 ×1.0 M20 ×1.25 M20 ×1.5 M20 ×2.0 M22 ×1.0 M22 ×1.25
0.75 0.85 0.95 1.10 1.25 1.35 1.45 1.60 1.75 1.90 2.05 2.15 2.50 2.40 2.90 3.30 3.25 3.75 4.20 4.10 5.00 6.00 6.80 7.80 8.50 9.50 10.20 12.00 14.00 15.50 17.50 19.50 21.00 24.00 26.50 29.50 32.00 35.00 37.50 40.50 43.00 47.00 50.50 54.50 58.00 62.00 66.00 70.00
-9 -8 -7 -6 -6 -5 -4.5
1.50 1.80 2.10 2.30 2.60 2.75 3.50 3.80 4.50 5.10 6.50 7.90 9.30 10.80 12.20 13.50 16.50 19.50 22.25 28.00 31.00 34.50 39.00 45.00
下孔径(%) 60% 100%
1.42 1.32 2.18 2.04 2.93 2.77 3.66 3.46 4.36 4.08 5.15 4.88 5.86 5.54 7.40 7.03 8.92 8.51 10.42 9.95 11.89 11.34
规格
1/16 -28
英制管牙
PT(Rc) PS(Rp) PF(G) 下孔径 下孔径 下孔径
下孔径(%) 60% 100%
0.84 0.73 0.94 0.83 1.04 0.93 1.21 1.08 1.37 1.22 1.47 1.32 1.57 1.42 1.74 1.57 1.91 1.71 2.04 1.87 2.21 2.01 2.31 2.11 2.68 2.46 2.61 2.35 3.11 2.85 3.55 3.24 3.51 3.19 4.01 3.69 4.48 4.13 4.70 4.66 5.35 4.92 6.35 5.92 7.19 6.65 8.19 7.65 9.03 8.38 10.03 9.38 10.86 10.11 12.70 11.83 14.70 13.83 16.38 15.29 18.38 17.29 20.38 19.29 22.05 20.75 25.05 23.75 27.73 26.21 30.73 29.21 33.40 31.67 36.40 34.67 39.08 37.13 42.08 40.13 44.75 42.59 48.75 46×59 52.43 50.05 56.43 54.05 60.10 57.50 64.10 61.50 68.10 65.50 72.10 69.50
Nr.6 -40
Nr.8 -36
Nr.10 -32
Nr.12 -28
1/4 -28
5/16 -24
3/8 -24
7/16 -20
1/2 -20
9/16 -18
5/8 -18
3/4 -16
7/8 -14
1
-12
11/8 -12 11/4 -12 13/8 -12 11/2 -12
1.30 1.60 1.90 2.10 2.40 2.70 3.00 3.50 4.10 4.70 5.50 6.90 8.50 9.90 11.50 12.90 14.50 17.50 20.25 23.25 26.50 29.50 32.50 36.00
×0.25 ×0.25 ×0.25 ×0.3 ×0.35 ×0.35 ×0.35 ×0.4 ×0.45 ×0.4 ×0.45 ×0.45 ×0.5 ×0.6 ×0.6 ×0.7 ×0.75 ×0.75 ×0.8 ×0.9 ×1.0 ×1.0 ×1.25 ×1.25 ×1.5 ×1.5 ×1.75 ×2.0 ×2.0 ×2.5 ×2.5 ×2.5 ×3.0 ×3.0 ×3.5 ×3.5 ×4.0 ×4.0 ×4.5 ×4.5 ×5.0 ×5.0 ×5.5 ×5.5 ×6 ×6 ×6 ×6
0.80 0.90 1.00 1.20 1.40 1.60 1.75 1.95 2.15 2.65 3.15 3.50 4.00 4.50 5.00 5.50 5.25 6.25 7.25 7.00 8.00 9.25 9.00 8.75 10.00 11.25 11.00 10.75 10.50 13.00 12.75 12.50 14.00 13.75 13.50 15.00 14.75 14.50 17.00 16.75 16.50 16.00 19.00 18.75 18.50 18.00 21.00 20.75
螺丝攻下孔径对照表
公制粗牙(M)
规格 下孔径
M1 M1.1 M1.2 M1.4 M1.6 M1.7 M1.8 M2 M2.2 M2.3 M2.5 M2.6 M3 M3 M3.5 M4 M4 M4.5 M5 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39 M42 M45 M48 M52 M56 M60 M64 M68 M72 M76
无屑丝攻美制粗牙(UNC)
规格 下孔径
Nr.1 Nr.2 Nr.3 Nr.4 Nr.5 Nr.6 Nr.8 Nr.10 Nr.12 1/4 5/16 3/8 7/16 1/2
-64
1.70
-56
2.00
-48
2.25
-40
2.55
-40
2.90
-32
3.15
-32
3.80
-24
4.35
-24
5.00
6.30 6.50 6.70
美制粗牙(UNC)
规格 下孔径
Nr.1 Nr.2 Nr.3 Nr.4 Nr.5 Nr.6 Nr.8 Nr.10 Nr.12 1/4 5/16 3/8 7/16 1/2 9/16 5/8 3/4 7/8 1 11/4 13/8 11/2 13/4 2
-64 -56 -48 -40 -40 -32 -32 -24 -24 -20 -18 -16 -14 -13 -12 -11 -10