Birmingham Sheet Metal Gauge (B.G.)

This is a numbering system for sheet metal gauge (thickness).

No.

Size inches

No.

Size inches

No.

Size inches

No.

Size inches

7/0

0.6666

9

0.1398

24

0.0247

39

0.0043

6/0

0.625

10

0.125

25

0.022

40

0.0038

5/0

0.5883

11

0.1113

26

0.0196

41

0.0034

4/0

0.5416

12

0.0991

27

0.0174

42

0.0030

3/0

0.500

13

0.0882

28

0.0156

43

0.0027

2/0

0.4452

14

0.0785

29

0.0139

44

0.0024

0

0.3964

15

0.0699

30

0.0123

45

0.0021

1

0.3532

16

0.0625

31

0.011

46

0.0019

2

0.3147

17

0.0556

32

0.0098

47

0.0017

3

0.2804

18

0.0495

33

0.0087

48

0.0016

4

0.250

19

0.044

34

0.0077

49

0.0013

5

0.2225

20

0.0392

35

0.0069

50

0.0012

6

0.1981

21

0.0349

36

0.0061

   

7

0.1764

22

0.0312

37

0.0054

   

8

0.1570

23

0.0278

38

0.0048

   

See also: Standard Wire Gauge.

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Subjects: Mechanical Engineering