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AN310C7
Aeronautical Standard Plain Castellated Hexagon Nut
Description
Castellated Nut
Specifications
| Bearing Surface Type | Washer faced |
|---|---|
| Countersink Angle | 109.0 degrees nut and 111.0 degrees nut |
| Material | CRES |
| Material Specification | 66 federal standard all material responses |
| NIIN | 00-167-1283 |
| NSN | 5310-00-167-1283 |
| Nondefinitive Specification/Std Data | 5 type |
| Nut Height | Between 0.437 inches and 0.469 inches |
| Nut Style | Hexagon castellated |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 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 | 0.438, 7/16-20 |
| Type | Stainless Steel |
| Weight | 0.02 lb |
| Width Across Flats | Between 0.614 inches and 0.627 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.
- AN310-7 AN 7/16-20 · Steel
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Catalog data updated 2026-07-05. Report a data error