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|
| Ball Size |
|
No. Balls per Pound (approx.) |
| Fractional Inches |
Decimal Inches |
Millimeters |
|
1018
Carbon Steel |
302
Stainless Steel |
| 1/16" |
.0625 |
1.588 |
27,500 |
27,400 |
| 3/32" |
.09375 |
2.381 |
8,160 |
8,100 |
| 1/8" |
.1250 |
3.175 |
3,440 |
3,420 |
| 5/32" |
.15625 |
3.969 |
1,760 |
1,750 |
| 3/16" |
.1875 |
4.763 |
1,020 |
1,010 |
| 7/32" |
.21875 |
5.556 |
642 |
638 |
| 1/4" |
.250 |
6.350 |
430 |
427 |
| 9/32" |
.28125 |
7.144 |
302 |
300 |
| 5/16" |
.3125 |
7.938 |
220 |
219 |
| 3/8" |
.375 |
9.525 |
128 |
127 |
| 7/16" |
.4375 |
11.113 |
80.3 |
79.7 |
| 1/2" |
.500 |
12.700 |
53.8 |
53.4 |
| 9/16" |
.5625 |
14.288 |
37.8 |
37.5 |
| 5/8" |
.625 |
15.875 |
27.5 |
27.4 |
|
11/16" |
.6875 |
17.462 |
|
|
|
3/4" |
.7500 |
19.050 |
|
|
|
| Grade Tolerances
(Semi-precision balls) |
| Grade |
Tolerance (inches) |
| 100 |
± .0001 |
| 200 |
± .0002 |
| 500 |
± .0005 |
| 1000 |
± .001 |
| 2000 |
± .002 |
|
| Grade Tolerances
(Precision balls) |
| Grade |
Tolerance (inches) |
|
3 |
± .000003 |
|
5 |
± .000005 |
|
10 |
± .000010 |
|
25 |
± .000025 |
|
50 |
± .000050 |
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© 2004, Abbott Ball Company, Inc. All rights reserved.
USA Plant
P.O. Box 330100, Railroad Place
West Hartford, Connecticut 06133-0100 USA |
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