| Decription |
| STANDARD SIZES |
| MM |
S.A.E. |
W.W |
| 6 |
1/4 |
15 |
| 7 |
|
15 |
| 8 |
5/16 |
20 |
| 9 |
|
30 |
| 10 |
3/8 |
40 |
| 11 |
7/16 |
50 |
| 12 |
|
55 |
| 13 |
1/2 |
60 |
| 14 |
9/16 |
80 |
| 15 |
|
95 |
| 16 |
5/8 |
110 |
| 17 |
11/16 |
120 |
| 18 |
|
140 |
| 19 |
3/4 |
150 |
| 20 |
|
180 |
| 21 |
13/16 |
195 |
| 22 |
7/8 |
210 |
| 23 |
|
275 |
| 24 |
15/16 |
305 |
| 25 |
1 |
340 |
| 26 |
|
365 |
| 27 |
1-1/16 |
440 |
| 28 |
1-1/8 |
475 |
| 30 |
|
550 |
| 32 |
1-1/4 |
705 |
|