A449 Recommended Hardware
| Nuts | Washers | |||
|---|---|---|---|---|
| Plain | Galvanized | |||
| 1/4 - 1-1/2 | 1-5/8 - 3 | 1/4 - 3 | ||
| A563B Hex | A563A Heavy Hex | A563DH Heavy Hex | F436 | |
| Note: Nuts of other grades having proof load stresses greater than the specified grade are suitable. The ASTM A563 Nut Compatibility Chart has a complete list of specifications. | ||||