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High-Strength Steel Heavy Hex Nuts
for Structural Applications—Grade C
Steel
Black-Oxide Steel
Hot-Dipped Galvanized Steel
These nuts are designed to secure ASTM A325 bolts in structural joints. About 10% wider and taller than standard hex nuts, these heavy hex nuts distribute the load over a large area.
Steel nuts without a finish are weldable and ready to be painted or finished.
Black-oxide steel nuts have a dark surface color and are mildly corrosion resistant in dry environments.
Hot-dipped galvanized steel nuts have a thick coating for good corrosion resistance. They must be used with other hot-dipped galvanized fasteners.
For technical drawings and 3-D models, click on a part number.
| Thread Size  | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Steel—ASTM Grade C | ||||||
|---|---|---|---|---|---|---|
| 1/2"-13 | 7/8" | 31/64" | ASTM A563 | 25 | 000000000 | 000000 |
| 5/8"-11 | 1 1/16" | 39/64" | ASTM A563 | 10 | 000000000 | 0000 |
| 3/4"-10 | 1 1/4" | 47/64" | ASTM A563 | 10 | 000000000 | 00000 |
| 7/8"-9 | 1 7/16" | 55/64" | ASTM A563 | 10 | 000000000 | 00000 |
| 1"-8 | 1 5/8" | 63/64" | ASTM A563 | 5 | 000000000 | 00000 |
| 1 1/8"-7 | 1 3/4" | 1 7/64" | ASTM A563 | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 2" | 1 7/32" | ASTM A563 | 1 | 000000000 | 0000 |
| 1 1/2"-6 | 2 3/8" | 1 15/32" | ASTM A563 | 1 | 000000000 | 00000 |
Black-Oxide Steel—ASTM Grade C | ||||||
| 1/2"-13 | 7/8" | 31/64" | ASTM A563 | 10 | 000000000 | 0000 |
| 5/8"-11 | 1 1/16" | 39/64" | ASTM A563 | 10 | 000000000 | 00000 |
| 3/4"-10 | 1 1/4" | 47/64" | ASTM A563 | 5 | 000000000 | 0000 |
| 7/8"-9 | 1 7/16" | 55/64" | ASTM A563 | 1 | 000000000 | 0000 |
| 1"-8 | 1 5/8" | 63/64" | ASTM A563 | 1 | 000000000 | 0000 |
| 1 1/8"-7 | 1 3/4" | 1 7/64" | ASTM A563 | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 2" | 1 7/32" | ASTM A563 | 1 | 000000000 | 00000 |
| 1 1/2"-6 | 2 3/8" | 1 15/32" | ASTM A563 | 1 | 000000000 | 00000 |
Hot-Dipped Galvanized Steel—ASTM Grade C | ||||||
| 1/2"-13 | 7/8" | 31/64" | ASTM A563 | 5 | 000000000 | 0000 |
| 5/8"-11 | 1 1/16" | 39/64" | ASTM A563 | 1 | 000000000 | 0000 |
| 3/4"-10 | 1 1/4" | 47/64" | ASTM A563 | 1 | 000000000 | 0000 |
| 7/8"-9 | 1 7/16" | 55/64" | ASTM A563 | 1 | 000000000 | 00000 |
| 1"-8 | 1 5/8" | 63/64" | ASTM A563 | 1 | 000000000 | 00000 |
| 1 1/8"-7 | 1 3/4" | 1 7/64" | ASTM A563 | 1 | 000000000 | 00000 |
| 1 1/4"-7 | 2" | 1 7/32" | ASTM A563 | 1 | 000000000 | 00000 |