Heavy Hex Head Bolts A307
| HEAVY HEX BOLTS A307 Grade A & B ASME B18.2.1-1996 |
Nominal
or
Basic
Product
Diameter
|
E |
F |
G |
H |
R |
Lt |
Body Diameter |
Width Across Flats |
Width
Across
Corners |
Head Height |
Radius
of Fillet |
Thread Length For Bolt Lengths
|
6 in. and
shorter
|
Over
6 in. |
Max |
Min |
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
Min |
|
Basic |
Basic |
1/2 |
0.5000 |
0.515 |
0.482 |
7/8 |
0.875 |
0.850 |
1.010 |
0.969 |
11/32 |
0.364 |
0.302 |
0.03 |
0.01 |
1.250 |
1.500 |
5/8 |
0.6250 |
0.642 |
0.605 |
1-1/16 |
1.062 |
1.031 |
1.227 |
1.175 |
27/64 |
0.444 |
0.378 |
0.06 |
0.02 |
1.500 |
1.750 |
3/4 |
0.7500 |
0.768 |
0.729 |
1-1/4 |
1.250 |
1.212 |
1.443 |
1.383 |
1/2 |
0.524 |
0.455 |
0.06 |
0.02 |
1.750 |
2.000 |
7/8 |
0.8750 |
0.895 |
0.852 |
1-7/16 |
1.438 |
1.394 |
1.660 |
1.589 |
37/64 |
0.604 |
0.531 |
0.06 |
0.02 |
2.000 |
2.250 |
1" |
1.0000 |
1.022 |
0.976 |
1-5/8 |
1.625 |
1.575 |
1.876 |
1.796 |
43/64 |
0.700 |
0.591 |
0.09 |
0.03 |
2.250 |
2.500 |
1-1/8 |
1.1250 |
1.149 |
1.098 |
1-13/16 |
1.812 |
1.756 |
2.093 |
2.002 |
3/4 |
0.780 |
0.658 |
0.09 |
0.03 |
2.500 |
2.750 |
1-1/4 |
1.2500 |
1.277 |
1.223 |
2 |
2.000 |
1.938 |
2.309 |
2.209 |
27/32 |
0.876 |
0.749 |
0.09 |
0.03 |
2.750 |
3.000 |
1-3/8 |
1.3750 |
1.404 |
1.345 |
2-3/16 |
2.188 |
2.119 |
2.526 |
2.416 |
29/32 |
0.940 |
0.810 |
0.09 |
0.03 |
3.000 |
3.250 |
1-1/2 |
1.5000 |
1.531 |
1.470 |
2-3/8 |
2.375 |
2.300 |
2.742 |
2.622 |
1 |
1.036 |
0.902 |
0.09 |
0.03 |
3.250 |
3.500 |
1-3/4 |
1.7500 |
1.785 |
1.716 |
2-3/4 |
2.750 |
2.662 |
3.175 |
3.035 |
1-5/32 |
1.196 |
1.054 |
0.12 |
0.04 |
3.750 |
4.000 |
2" |
2.0000 |
2.039 |
1.964 |
3-1/8 |
3.125 |
3.025 |
3.608 |
3.449 |
1-11/32 |
1.388 |
1.175 |
0.12 |
0.04 |
4.250 |
4.500 |
2-1/4 |
2.2500 |
2.305 |
2.214 |
3-1/2 |
3.500 |
3.388 |
4.041 |
3.862 |
1-1/2 |
1.548 |
1.327 |
0.19 |
0.06 |
4.750 |
5.000 |
2-1/2 |
2.5000 |
2.559 |
2.461 |
3-7/8 |
3.875 |
3.750 |
4.474 |
4.275 |
1-21/32 |
1.708 |
1.479 |
0.19 |
0.06 |
5.250 |
5.500 |
2-3/4 |
2.7500 |
2.827 |
2.711 |
4-1/4 |
4.250 |
4.112 |
4.907 |
4.688 |
1-13/16 |
1.869 |
1.632 |
0.19 |
0.06 |
5.750 |
6.000 |
3" |
3.0000 |
3.081 |
2.961 |
4-5/8 |
4.625 |
4.475 |
5.340 |
5.102 |
2 |
2.060 |
1.815 |
0.19 |
0.06 |
6.250 |
6.500 |
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‡Length of a cap screw is measured from the underhead bearing surface to the extreme end of the screw.
**Product standards require the manufacturer’s head marking to appear on the top of all cap screws 1/4” diameter and larger. “X” represents one location such a marking may appear.
|
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