nuts › plain castellated hexagon nuts
AN310-8
Aeronautical Standard Plain Castellated Hexagon Nut
Description
Castellated Nut
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Dimension A | 0.750 in |
| Dimension A Tolerance | +0.002 in |
| Dimension B | 7/8 in |
| Dimension H | 9/16 in |
| Industry Standards/Certification | AN310 |
| Material | Steel |
| Minimum Ultimate Tensile Strength (Steel) | 18500 lb |
| NIIN | 00-167-1289 |
| NSN | 5310-00-167-1289 |
| Nut Height | Between 0.546 inches and 0.578 inches |
| Nut Style | Hexagon castellated |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 type 2 class 3 federal specification single treatment response |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.50, 1/2-20 |
| Thread T | 1/2-20 |
| Type | Cad Plated, Castellated |
| Weight | 0.035 lb |
| Width Across Flats | Between 0.738 inches and 0.752 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- AN310C8 AN 1/2-20 · CRES
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error