Heavy hex structural bolts are designed for steel-to-steel structural connections. Consequently, they are typically
very short. The A325 and A490 specifications are not intended for general applications, including anchor bolts.
In these applications, substitutions of A449 for A325 and A354 grade BD for A490 should be considered.
Manufacturing
Pringmetal manufactures A325 and A490 Heavy hex structural bolts from 1/2" diameter through 1-1/2" diameter, typically in lengths longer than those which are normally available in the marketplace.
Bolt Length Tolerance
Nominal Bolt Size, in. | 1/2 | 5/8 | 3/4 thru 1 | 1-1/8 thru 1-1/2 |
Nominal Bolt Length | Tolerance of Length | |||
Thru 6 in. | -0.12 | -0.12 | -0.19 | -0.25 |
Dimensions
,
Bolt Diameter | D | F | C | H | T | |||||
Body Diameter | Width Across Flats | Width Across Corners | Height | Thread | ||||||
Max | Basic | Max | Min | Max | Min | Basic | Max | Min | Basic | |
1/2 | 0.515 | 7/8 | 0.875 | 0.850 | 1.010 | 0.969 | 5/16 | 0.323 | 0.302 | 1.00 |
5/8 | 0.642 | 1-1/16 | 1.062 | 1.031 | 1.227 | 1.175 | 25/64 | 0.403 | 0.378 | 1.25 |
3/4 | 0.768 | 1-1/4 | 1.250 | 1.212 | 1.443 | 1.383 | 15/32 | 0.483 | 0.455 | 1.38 |
7/8 | 0.895 | 1-7/16 | 1.438 | 1.394 | 1.660 | 1.589 | 35/64 | 0.563 | 0.531 | 1.50 |
1 | 1.022 | 1-5/8 | 1.625 | 1.575 | 1.876 | 1.796 | 39/64 | 0.627 | 0.591 | 1.75 |
1-1/8 | 1.149 | 1-13/16 | 1.812 | 1.756 | 2.093 | 2.002 | 11/16 | 0.718 | 0.658 | 2.00 |
1-1/4 | 1.277 | 2 | 2.00 | 1.938 | 2.309 | 2.209 | 25/32 | 0.813 | 0.749 | 2.00 |
1-3/8 | 1.404 | 2-3/16 | 2.188 | 2.119 | 2.526 | 2.416 | 27/32 | 0.878 | 0.810 | 2.25 |
1-1/2 | 1.531 | 2-3/8 | 2.375 | 2.300 | 2.742 | 2.622 | 15/16 | 0.974 | 0.902 | 2.25 |
Dimensions per ASME B18.2.6 2003