Metric |
USA |
UK |
2.0 mm |
- |
- |
2.25 mm |
- |
14 |
2.5 mm |
1 / B |
13 |
2.75 mm |
- |
12 |
3.0 mm |
2 / C |
11 |
3.25 mm |
3 / D |
11 |
3.5 mm |
4 / E |
10 |
3.75 mm |
5 / F |
9 |
4.0 mm |
- |
- |
4.25 mm |
6 / G |
8 |
4.5 mm |
- |
- |
4.75 mm |
7 |
7 |
5.0 mm |
8 / H |
6 |
5.5
mm |
8 / I |
5 |
6.0 mm |
10 / J |
4 |
6.5 mm |
10½ / K |
3 |
7.0 mm |
- |
2 |
8.0 mm |
11
/ L |
0 |
9.0 mm |
13 / M |
00 |
9.5 mm |
- |
|
10.0 mm |
15 / N |
000 |
11.5 mm |
- / P |
|
12.0
mm |
17 / - |
|
15.75 mm |
Q / - |
|
|
|
|
|
Metric |
USA |
UK |
3.0 mm |
00 |
- |
2.5 mm |
0 |
00 |
2.0 mm |
1 |
1 |
1.95 mm |
2 |
- |
1.89
mm |
3 |
- |
1.75 mm |
4 |
2 |
1.7 mm |
5 |
- |
1.6 mm |
6 |
- |
1.5 mm |
7 |
2.5 |
1.25
mm |
8 |
3 |
1.15 mm |
9 |
- |
1.0 mm |
10 |
4 |
0.8 mm |
11 |
- |
0.75 mm |
12 |
5 |
0.7
mm |
13 |
- |
0.6 mm |
14 |
6 |
|
|
|
|
Metric |
USA |
UK |
2.0 mm |
0 |
14 |
2.25 mm |
1 |
13 |
2.75 mm |
2 |
12 |
3.0 mm |
- |
11 |
3.25 mm |
3 |
10 |
3.5 mm |
4 |
0 |
3.75 mm |
5 |
9 |
4.0 mm |
6 |
8 |
4.5 mm |
7 |
7 |
5.0 mm |
8 |
6 |
5.5 mm |
9 |
5 |
6.0 mm |
10 |
4 |
6.5 mm |
10½ |
3 |
7.0 mm |
- |
2 |
7.5 mm |
- |
1 |
8.0 mm |
11 |
0 |
9.0 mm |
13 |
00 |
10 mm |
15 |
000 |
12 mm |
17 |
- |
16 mm |
19 |
- |
19 mm |
35 |
- |
25 mm |
50 |
|
|
|
|
|
|