For information on choosing the correct nuts for our F3125 structural bolts, please see the chart below. If you have any additional questions, contact our sales team.
Suitable Nuts for Use with ASTM A325 and A490 Bolts
| Nut Spec | A563 | A563 | A563 | A563 | A563 | A194 |
| Nut Grade | C | C3 | D | DH | DH3 | 2H |
| Bolt Spec and Type | ||||||
| A325, Type 1 | * | * | * | * | * | * |
| A325, Type 3 | * | * | ||||
| A325, Galvanized | * | * | ||||
| A490, Type 1 | * | * | * | |||
| A490, Type 3 | * |