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 | |||
| Any | 1⁄4 to 11⁄2 |
A |
B,D,DH |
A,B,C,D,DH,DH3 |
||
| >11⁄2 to 2 |
A |
A |
C,D,DH,DH3 |
|||
| >2 to 4 |
A |
C,D,DH,DH3 |
||||
| Any | 1⁄4 to 11⁄2 |
A |
B,D,DH |
A,B,C,D,DH,DH3 |
||
| >11⁄2 to 2 |
A |
A |
||||
| >2 to 4 |
A |
|||||
| Plain | 1⁄2 - 11⁄2 |
C |
C3,D,DH,DH3 |
|||
| Galvanized | 1⁄2 - 11⁄2 |
DH |
||||
| Plain | 1⁄2 - 11⁄2 |
C3 |
DH3 |
|||
| Plain | 1⁄4 to 11⁄2 |
C |
D,DH |
C3,D,DH,DH3 |
||
| >11⁄2 to 4 |
C |
C3,D,DH,DH3 |
||||
| Galvanized | 1⁄4 to 11⁄2 |
DH |
||||
| >11⁄2 to 4 |
DH |
|||||
| Plain | 1⁄4 to 11⁄2 |
DH |
DH |
D,DH,DH3 |
||
| >11⁄2 to 4 |
DH |
DH3 |
||||
| Plain | 1⁄4 to 11⁄2 |
B |
D,DH |
B,C,C3,D,DH,DH3 |
||
| >11⁄2 to 3 |
A |
C,C3,D,DH,DH3 |
||||
| Galvanized | 1⁄4 to 11⁄2 |
DH |
D,DH |
D |
||
| >11⁄2 to 3 |
DH |
D |
||||
| Plain | 1⁄2 - 11⁄2 |
DH |
DH3 |
|||
| Plain | 1⁄2 - 11⁄2 |
DH3 |
||||
|
A687 |
Plain | 5⁄8 - 3 |
D |
DH,DH3 |
||
| Galvanized | 5⁄8 - 3 |
DH |
||||
| Any | 1⁄2 to 11⁄2 |
A |
B,D,DH |
A,B,C,D,DH,DH3 |
||
| >11⁄2 to 4 |
A |
C,D,DH,DH3 |
||||
| Plain | 1⁄2 to 11⁄2 |
A |
B,D,DH |
A,B,C,D,DH,DH3 |
||
| >11⁄2 to 4 |
A |
C,D,DH,DH3 |
||||
| Galvanized | 1⁄2 to 4 |
A |
C,D,DH,DH3 |
|||
| Plain | 1⁄2 to 11⁄2 |
D |
DH,DH3 |
|||
| >11⁄2 to 3 |
DH |
DH3 |
||||
| Galvanized | 1⁄2 to 3 |
DH |
DH3 |
|||
| 1. The availability of A563 grade DH nuts in nominal sizes 3/4″ and larger is very limited and generally available only on special orders of 50,000 or more. For smaller quantities, ASTM A194 grade 2H should be considered. | ||||||