ASTM A563 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 A563 specification. Boltport manufactures and stock ASTM A563 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 B18.2.2 |
Square, Hex and Heavy Hex Nuts |
Reference Specifications
| ASTM A153 |
Specification for Hot-Dip Zinc Galvanizing |
| ASTM A307 |
Specification for Carbon Steel Bolts and Studs and Threaded Rods. |
| ASTM A325 |
Specification for High Strength Structural Bolts |
| ASTM A354 |
Specification for Alloy Steel Bolts, Studs and Externally Threaded Fasteners. |
| ASTM A449 |
Specification for Heat treated bolts, screws and studs. |
| ASTM A490 |
Specification for High Strength Structural Bolts |
| ASTM B695 |
Specification for Mechanical Zinc Coating |
| ASME B1.1 |
Metric Screw Threads Profile |