ASTM A563M is a standard material specification for carbon and alloy steel nuts general
structural and mechanical uses on bolts, studs, and other externally threaded fasteners.
Find chemical and mechanical requirements for eight grades of carbon and alloy steel nuts
covered by ASTM A563M specification. Boltport manufactures and stock ASTM A563M nuts in
grade O, A, B, C, C3, D, DH and DH3.
Nut Grades
| Grade |
Description |
| O |
Carbon Steel |
| A |
Carbon Steel |
| B |
Carbon Steel |
| C |
Carbon Steel |
| C3 |
Weathering Steel |
| D |
Carbon Steel |
| DH |
Weathering Steel |
| DH3 |
Weathering Steel |
Dimensions Standards (Recommended)
| ASME B18.2.4.1M |
Metric Hex Nuts, Style 1 |
| ASME B18.2.4.2M |
Metric Hex Nuts, Style 2 |
| ASME B18.2.4.3M |
Metric Slotted Hex Nuts |
| ASME B18.2.4.4M |
Metric Hex Flange Nuts |
| ASME B18.2.4.5M |
Metric Hex Jam Nuts |
| ASME B18.2.4.6M |
Metric Heavy Hex Nuts |
| ISO 4775 |
Metric Heavy Hex Nuts |
Reference Specifications
| ASTM A153M |
Specification for Hot-Dip Zinc Galvanizing |
| ASTM A325M |
Specification for High Strength Structural Bolts |
| ASTM A490M |
Specification for High Strength Structural Bolts |
| ASTM B695 |
Specification for Mechanical Zinc Coating |
| ASME B1.13M |
Metric Screw Threads Profile |