英制螺纹尺寸对照表2

英制螺纹尺寸对照表

牙型代号大径

mm d=D

螺距mm p

每英寸牙

数tpi

中径

mm d2=D2

小径外

螺纹d3

牙型高H1

底孔直

径mm

1/16" BSW 60

3/32" BSW 48

1/8" BSW 40

5/32" BSW 32

3/16" BSW 24

7/32" BSW 24

1/4" BSW 20

5/16" BSW 18

3/8" BSW 16

7/16" BSW 14

1/2" BSW 12

5/8" BSW 11

3/4" BSW 10

7/8" BSW 9 1" BSW 8

1 1/8" BSW 7

1 1/4" BSW 7

1 3/8" BSW 6

1 1/2" BSW 6

1 5/8" BSW 5

1 3/4" BSW 5

1 7/8" BSW 4 1/

2 2" BSW 4 1/2

2 1/4" BSW 4

2 1/2" BSW 4

2 3/4" BSW

3 1/2 3" BSW 3 1/2 3 1/4" BSW 3 1/

4 3 1/2" BSW 3 1/4 3 3/4" BSW 3 4" BSW 3

4 1/4" BSW 2 7/8 4 1/2" BSW 2 7/8 4 3/4" BSW 2 3/4 5" BSW 2 3/4

5 1/4" BSW 2 5/8 5 1/2" BSW 2 5/8 5 3/4" BSW 2 1/2 6" BSW 2 1/2