Backnut

Inch

mm

A

B

1/4"

8

6.0

22.0

3/8"

10

7.0

27.0

1/2"

15

8.0

32.0

3/4"

20

9.0

36.0

1"

25

10.0

46.0

1.1/4"

32

11.0

55.0

1.1/2"

40

12.0

60.0

2"

50

13.0

75.0

2.1/2"

65

16.0

95.0

3"

80

19.0

105.0

4"

100

23.0

135.0