A-A-50969
TABLE I. Sizes and Capacities.
Size |
Shank diameter and length, (inches) |
Mount taper (Jacobs) |
1 |
½ x 2-1/2 |
0 |
2 |
½ x 2-1/2 |
1 |
3 |
½ x 2-1/2 |
2 |
4 |
½ x 2-1/2 |
3 |
5 |
½ x 2-1/2 |
4 |
6 |
½ x 2-1/2 |
6 |
7 |
½ x 2-1/2 |
33 |
8 |
5/8 x 2-1/2 |
1 |
9 |
5/8 x 2-1/2 |
2 |
10 |
5/8 x 2-1/2 |
3 |
11 |
5/8 x 2-1/2 |
4 |
12 |
5/8 x 2-1/2 |
6 |
13 |
5/8 x 2-1/2 |
33 |
14 |
¾ x 3 |
2 |
15 |
¾ x 3 |
3 |
16 |
¾ x 3 |
4 |
17 |
¾ x 3 |
6 |
18 |
¾ x 3 |
33 |
19 |
1 x 3 |
2 |
20 |
1 x 3 |
3 |
21 |
1 x 3 |
4 |
22 |
1 x 3 |
6 |
23 |
1 x 3 |
33 |
24 |
1-1/2 x 4 |
3 |
25 |
1-1/2 x 4 |
4 |
26 |
1-3/4 x 4 |
3 |
27 |
1-3/4 x 4 |
4 |
Material. All arbors shall be made from a high grade steel entirely suitable for the purpose intended. Each arbor shall be of solid construction.
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