Heavy hex structural bolts are designed for steel-to-steel structural connections. Consequently, they are typically very short. Unless otherwise specified, F3125 structural bolts will have a Unified National Coarse thread pitch. The F3125 Grades A325 and A490 specifications are not intended for general applications, including anchor bolts.
Manufacturing
Portland Bolt 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.
Stock
Grade: F3125 Grade A325 Type 1
Diameters: 1/2″ – 1″
Lengths: 5″ maximum
Origin: Domestic
Finish: Plain and hot-dip galvanized
Bolt Length Tolerance
| Nominal Length, in. | Nominal Size, in. | |||
|---|---|---|---|---|
| 1⁄2 | 5⁄8 | 3⁄4 thru 1 | 11⁄8 thru 11⁄2 | |
| Thru 6 in. | -0.12 | -0.12 | -0.19 | -0.25 |
| Over 6 in. | -0.19 | -0.25 | -0.25 | -0.25 |
Structural Bolt Dimensions
| Bolt Diameter | D | F | C | H | T | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Body Diameter | Width Across Flats | Width Across Corners | Height | Thread Length | ||||||
| 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 | 11⁄16 | 1.062 | 1.031 | 1.227 | 1.175 | 25⁄64 | 0.403 | 0.378 | 1.25 |
| 3⁄4 | 0.768 | 11⁄4 | 1.250 | 1.212 | 1.443 | 1.383 | 15⁄32 | 0.483 | 0.455 | 1.38 |
| 7⁄8 | 0.895 | 17⁄16 | 1.438 | 1.394 | 1.660 | 1.589 | 35⁄64 | 0.563 | 0.531 | 1.50 |
| 1 | 1.022 | 15⁄8 | 1.625 | 1.575 | 1.876 | 1.796 | 39⁄64 | 0.627 | 0.591 | 1.75 |
| 11⁄8 | 1.149 | 113⁄16 | 1.812 | 1.756 | 2.093 | 2.002 | 11⁄16 | 0.718 | 0.658 | 2.00 |
| 11⁄4 | 1.277 | 2 | 2.00 | 1.938 | 2.309 | 2.209 | 25⁄32 | 0.813 | 0.749 | 2.00 |
| 13⁄8 | 1.404 | 23⁄16 | 2.188 | 2.119 | 2.526 | 2.416 | 27⁄32 | 0.878 | 0.810 | 2.25 |
| 11⁄2 | 1.531 | 23⁄8 | 2.375 | 2.300 | 2.742 | 2.622 | 15⁄16 | 0.974 | 0.902 | 2.25 |
|
Dimensions per ASME B18.2.6 2011 |
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Stock F3125 Grade A325 Structural Bolts
| Length | Diameter | |||||||
|---|---|---|---|---|---|---|---|---|
| 1/2" | 5/8" | 3/4" | 7/8" | |||||
| Plain | Galv. | Plain | Galv. | Plain | Galv. | Plain | Galv. | |
| 11⁄2 | - | 16076 | - | 16092 | - | - | - | - |
| 13⁄4 | - | 16078 | - | 16094 | 16123 | 16124 | - | - |
| 2 | - | 16080 | - | 16096 | 16125 | 16126 | 16021 | 16022 |
| 21⁄4 | - | - | - | 16098 | 16127 | 16128 | - | 16024 |
| 21⁄2 | - | - | - | 16100 | 16129 | 16130 | 16025 | 16026 |
| 23⁄4 | - | - | - | - | - | 16132 | - | - |
| 3 | - | - | - | - | 16133 | 16134 | - | - |
| Other sizes available upon request | ||||||||