Bolt - Carriage, Ribbed Neck, ANSI (in)
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SME Standards
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ASME B18.5
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Length (L) of a carriage bolt is measured from underside of head to the end of the bolt.
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* Tolerance on #10 through 1/2" sizes for lengths 7/8" and shorter shall be +0.031 and -0.000.
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Bolt Size |
Body Diameter
|
Head Diameter
|
Head Height
|
Head to Ribs for Length of D |
Number of Ribs |
Diameter Over Ribs E |
Depth Over Ribs for Length of F | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Max |
Min |
Max |
Min |
Max |
Min |
7/8 and Shorter ±0.031 * |
1" and Longer ±0.031 * |
Approx |
Min |
7/8 and Shorter ±0.031 |
1" and 1 1/8 ±0.031 |
1 1/4 and Longer ±0.031 | |
|
#10 |
0.199 |
0.182 |
0.469 |
0.438 |
0.114 |
0.094 |
0.031 |
0.063 |
9 |
0.210 |
0.250 |
0.407 |
0.594 |
|
1/4 |
0.260 |
0.237 |
0.594 |
0.563 |
0.145 |
0.125 |
0.031 |
0.063 |
10 |
0.274 |
0.250 |
0.407 |
0.594 |
|
5/16 |
0.324 |
0.298 |
0.719 |
0.688 |
0.176 |
0.156 |
0.031 |
0.063 |
12 |
0.340 |
0.250 |
0.407 |
0.594 |
|
3/8 |
0.388 |
0.360 |
0.844 |
0.782 |
0.208 |
0.188 |
0.031 |
0.063 |
12 |
0.405 |
0.250 |
0.407 |
0.594 |
|
7/16 |
0.452 |
0.421 |
0.969 |
0.907 |
0.239 |
0.219 |
0.031 |
0.063 |
14 |
0.470 |
0.250 |
0.407 |
0.594 |
|
1/2 |
0.515 |
0.483 |
1.094 |
1.032 |
0.270 |
0.250 |
0.031 |
0.063 |
16 |
0.534 |
0.250 |
0.407 |
0.594 |
|
5/8 |
0.642 |
0.605 |
1.344 |
1.219 |
0.344 |
0.313 |
0.094 |
0.094 |
19 |
0.660 |
0.313 |
0.438 |
0.625 |
|
3/4 |
0.768 |
0.729 |
1.594 |
1.469 |
0.406 |
0.375 |
0.094 |
0.094 |
22 |
0.785 |
0.313 |
0.438 |
0.625 |