Black annealed iron wire/black iron wire/black binding wire:

Wire Gauge

SWG(mm)

BWG(mm)

Wire Gauge

SWG(mm)

BWG(mm)

6

4.877

5.156

20

0.914

0.889

7

4.47

4.572

21

0.813

0.813

8

4.064

4.191

22

0.711

0.711

9

3.658

3.759

23

0.61

0.635

10

3.251

3.404

24

0.559

0.559

11

2.946

3.048

25

0.508

0.508

12

2.642

2.796

26

0.475

0.475

13

2.337

2.413

27

0.417

0.406

14

2.032

2.108

28

0.376

0.356

15

1.829

1.829

29

0.345

0.33

16

1.626

1.651

30

0.315

0.305

17

1.422

1.473

31

0.295

0.254

18

1.219

1.245

32

0.274

0.229

19

1.016

1.067

33

0.254

0.203