一般螺纹内外径允收规格表

常 用 螺 丝 规 格 表

外径 外径 外径

外径

类别 规格 牙距 最大 最小 类别 规格 牙距 最大 最小 类别 规格 牙数最大 最小

类别 规格 牙数

最大 最小

M2 0.4

1.9811.886 M2 0.4 1.6791.5671/8 40

3.145 3.03 4# 48 2.877 2.713

M3 0.5

2.9802.874 M3 0.5 2.5992.4595/32 32

3.945 3.795 6# 40 3.484 3.356

M4 0.7

3.9783.838 M4 0.7 3.4223.242

3/16 24 4.732 4.592 8# 36 4.1453 4.0056

M5

0.8

4.9764.826 M5 0.8 4.3344.1341/4

20 6.32 6.165 10# 32 4.8031 4.6507

M6 1.0

5.9745.794 M6 1.0 5.1534.9175/16 18 7.905 7.737

12# 28 5.4610 5.2959

M7 1.0

6.9746.794

M7 1.0 6.1535.917

3/8 16 9.49 9.312

1/4 28 6.3246 6.1595

M8 1.25

7.9727.760 M8 1.256.9126.647

7/16 14 11.07 10.88

5/1624 7.9096 7.7267

M10 1.50

9.9689.732 M101.508.6768.376

1/2 12 12.66 12.46

3/8 24 9.4971 9.3142

M12 1.75

11.96611.701 M121.7510.44110.106

9/16 12 14.25 14.04

7/1620 11.0795 10.8737

M14 2.0

13.96213.682 M142.0 12.21011.835

英 制 外 螺 纹 粗 牙 550

5/8 11 15.83 15.61

1/2 20 12.6670 12.4612

M16 2.0

15.96215.682 M162.0 14.21013.8354# 40 2.824 2.695

9/1618 14.2519 14.0310

M18 2.5

17.95817.623 M182.5 15.744

15.2946# 32 3.484 3.333

5/8 18 15.8394 15.6185

M20 2.5

19.95819.623 M202.5 17.744

17.2948# 32 4.14273.9903

3/4 16 19.0119 18.7731

M22 2.5

21.95821.623 M222.5 19.74419.29410# 24 4.80064.61777/8 14 22.1844 21.9227

M24 3.0

23.95223.577 M243.0

21.25220.75212# 24 5.46105.27811 12 25.3543 25.0647

M27 3.0

26.95226.577 M273.0

24.25223.7521/4 20 6.32216.1163

国 标 外 螺 纹 粗 牙 600

M30 3.5

29.94729.522 国 标 内 螺 纹 粗 牙 600

M303.5 26.77126.2115/16 18 7.90707.6860美 制 外 螺 纹 (2A) 细 牙 600

M4 0.5

3.9803.874 M8

1.0 7.1536.9173/8 16 9.49209.25328# 32 3.5306 3.3020

M5 0.5

4.9804.874

1.0 9.1538.9177/16 14 11.076910.815310# 24 3.9624 3.6830

M6 0.75

5.9785.838 M10

1.258.9128.6471/2 13 1

2.661912.385012# 24 4.5974 4.3434

M7 0.75

6.9786.838/

1.2510.91210.6479/16 12 14.246913.95731/4 20 5.2578 4.9784

M8

1.0

7.9747.794

M121.5 10.67610.3765/8 11 15.834415.52705/1618 6.7310 6.4008

1.0

9.9749.794

M141.5 12.67612.3763/4 10 19.004318.6766

3/8 16 8.1534 7.7978

M10 1.25

9.9729.760

M161.5 14.67614.3767/8 9 22.176721.8273

7/1614 9.5504 9.1440

1.25

11.97211.760 1.5 16.67616.376美 制 外 螺 纹 (2A) 粗 牙 600

1 8 25.349224.9682

1/2 13 11.0236 10.5918

M12 1.5 11.96811.732 M18

2.0 16.21015.8358# 36

3.60683.4036

9/1612 12.4460 11.9888

M14

1.5 13.96813.732 1.5 18.67618.37610# 32 4.16563.9624

5/8 11 13.8684 13.3858

M16 1.5

15.96815.732 M20

2.0 18.21017.83512# 28 4.72444.4958

3/4 10 16.8402 16.3068

1.5

17.96817.732 1.5 20.67620.3761/4 28 5.588 5.3594

7/8 9 19.7612 19.1770

M18 2.0 17.96217.682 M222.0 20.21019.8355/16 24 7.03586.7818

1 8 22.6060 21.9710

1.5 19.96819.732 M24

2.0 22.21021.8353/8 24 8.63608.3820

M20

2.0 19.96219.682 M272.0 25.21024.8357/16 20 10.03309.7282

1.5 21.96821.732 M30

2.0

28.21027.8351/2 20 11.607811.3284

M22

2.0 21.96221.682 9/16 18 1

3.081012.7508

M24 2.0 23.96223.682 5/8 18 14.681214.3510

M27 2.0 26.96226.682 3/4 16 17.678417.3228

国 标 外 螺 纹 细 牙 600

M30

2.0

29.962

29.682

国 标 内 螺 纹 细 牙 600

美 制 内 螺 纹 （2B）细 牙 600

7/8

14

20.6756

20.2692美 制 内 螺 纹 （2B）粗 牙 600