Nut Compatibility Chart
| Nut Compatibility Chart | ||||||
|---|---|---|---|---|---|---|
| Grade of Bolt | Surface Finish | Nominal Size Inches | A563 Grade and ANSI Nut Style | |||
| Recommended | Suitable | |||||
| Hex | Heavy Hex | Hex | Heavy Hex | |||
| A307 Grade A & C | Any | 1/4" to 1-1/2" | A | - | B,D,DH | A,B,C,D,DH,DH3 |
| >1-1/2" to 2" | - | A | A | C,D,DH,DH3 | ||
| >2" to 4" | - | A | - | C,D,DH,DH3 | ||
| A307 Grade B | Any | 1/4" to 1-1/2" | - | A | B,D,DH | A,B,C,D,DH,DH3 |
| >1-1/2" to 2" | - | A | A | - | ||
| >2" to 4" | - | A | - | - | ||
| F3125 A325 Type 1 | Plain | 1/2" to 1-1/2" | - | C | - | C3,D,DH,DH3 |
| Galvanized | 1/2" to 1-1/2" | - | DH | - | - | |
| F3125 A325 Type 3 | Plain | 1/2" to 1-1/2" | - | C3 | - | DH3 |
| A354 Grade BC | Plain | 1/4" to 1-1/2" | - | C | D,DH | C3,D,DH,DH3 |
| >1-1/2" to 4" | - | C | - | C3,D,DH,DH3 | ||
| Galvanized | 1/4" to 1-1/2" | - | DH | - | - | |
| >1-1/2" to 4" | - | DH | - | - | ||
| A354 Grade BD | Plain | 1/4" to 1-1/2" | - | DH | DH | D,DH,DH3 |
| >1-1/2" to 4" | - | DH | - | DH3 | ||
| A449 | Plain | 1/4" to 11/2" | B | - | D,DH | B,C,C3,D,DH,DH3 |
| >1-1/2" to 3" | - | A | - | C,C3,D,DH,DH3 | ||
| Galvanized | 1/4" to 1-1/2" | - | DH | D,DH | D | |
| >1-1/2" to 3" | - | DH | - | D | ||
| F3125 A490 Type 1 | Plain | 1/2" to 1-1/2" | - | DH | - | DH3 |
| F3125 A490 Type 3 | Plain | 1/2" to 1-1/2" | - | DH3 | - | - |
| A687 | Plain | 5/8" to 3" | - | D | - | DH,DH3 |
| Galvanized | 5/8" to 3" | - | DH | - | - | |
| F1554 Grade 36 | Any | 1/2" to 1-1/2" | A | - | B,D,DH | A,B,C,D,DH,DH3 |
| >1-1/2" to 4" | - | A | - | C,D,DH,DH3 | ||
| F1554 Grade 55 | Plain | 1/2" to 1-1/2" | A | - | B,D,DH | A,B,C,D,DH,DH3 |
| >1-1/2" to 4" | - | A | - | C,D,DH,DH3 | ||
| Galvanized | 1/2" to 4" | - | A | - | C,D,DH,DH3 | |
| F1554 Grade 105 | Plain | 1/2" to 1-1/2" | D | - | - | DH,DH3 |
| >1-1/2" to 3" | - | DH | - | DH3 | ||
| Galvanized | 1/2" to 3" | - | DH | - | DH3 | |
1. Nuts made in accordance with the requirements of Specification A194 Grade 2H and marked with its grade symbol are an acceptable equivalent for Grade DH nuts. (per ASTM A563/A563M-21a, Table X1.1)
| ASTM A194 Nut Compatibility Chart | |
|---|---|
| Grade of Bolt | A194 Heavy Hex Nut Grade |
| A193 Grade B7 | 2H or 4 or 7 |
| A193 Grade B8 (Class 1 and 2) | 8 |
| A193 Grade B8M (Class 1 and 2) | 8M |
| A320 Grade L7 | 4 or 7 |
| A320 Grade B8 (Class 1 and 2) | 8 |
| A320 Grade B8M (Class 1 and 2) | 8M |
| A320 Grade B8C | 8C |
| A320 Grade B8T | 8T |
| A320 Grade B8LN | 8LN |
| A320 Grade B8MLN | 8MLN |
For Class 2 stainless steel grades, strain hardened nuts available as a supplementary requirement
All information derived from globally recognized specifications, subject to change, user discretion is advised.
