Heavy Hex Head Bolts A325 & A490
| STRUCTURAL BOLTS, A325 & A490 ASME B18.2.6-1996 |
Nominal
or
Basic
Product
Diameter
|
E |
F |
G |
H |
R |
Lt |
Y |
Body Diameter |
Width Across Flats |
Width
Across
Corners |
Head Height |
Radius
of Fillet |
Thread Length
|
Tran-
sition
Thread
Length |
Max |
Min |
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
Min |
Min |
Ref |
Basic |
1/2 |
0.5000 |
0.515 |
0.482 |
7/8 |
0.875 |
0.850 |
1.010 |
0.969 |
5/16 |
0.323 |
0.302 |
0.031 |
0.009 |
1.00 |
0.19 |
5/8 |
0.6250 |
0.642 |
0.605 |
1-1/16 |
1.062 |
1.031 |
1.227 |
1.175 |
25/64 |
0.403 |
0.378 |
0.062 |
0.021 |
1.25 |
0.22 |
3/4 |
0.7500 |
0.768 |
0.729 |
1-1/4 |
1.250 |
1.212 |
1.443 |
1.383 |
15/32 |
0.483 |
0.455 |
0.062 |
0.021 |
1.38 |
0.25 |
7/8 |
0.8750 |
0.895 |
0.852 |
1-7/16 |
1.438 |
1.394 |
1.660 |
1.589 |
35/64 |
0.563 |
0.531 |
0.062 |
0.031 |
1.50 |
0.28 |
1" |
1.0000 |
1.022 |
0.976 |
1-5/8 |
1.625 |
1.575 |
1.876 |
1.796 |
39/64 |
0.627 |
0.591 |
0.093 |
0.062 |
1.75 |
0.31 |
1-1/8 |
1.1250 |
1.149 |
1.098 |
1-13/16 |
1.812 |
1.756 |
2.093 |
2.002 |
11/16 |
0.718 |
0.658 |
0.093 |
0.062 |
2.00 |
0.34 |
1-1/4 |
1.2500 |
1.277 |
1.223 |
2 |
2.000 |
1.938 |
2.309 |
2.209 |
25/32 |
0.813 |
0.749 |
0.093 |
0.062 |
2.00 |
0.38 |
1-3/8 |
1.3750 |
1.404 |
1.345 |
2-3/16 |
2.188 |
2.119 |
2.526 |
2.416 |
27/32 |
0.878 |
0.810 |
0.093 |
0.062 |
2.25 |
0.44 |
1-1/2 |
1.5000 |
1.531 |
1.470 |
2-3/8 |
2.375 |
2.300 |
2.742 |
2.622 |
15/16 |
0.974 |
0.902 |
0.093 |
0.062 |
2.25 |
0.44 |
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 |
‡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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