nuts › plain castellated hexagon nuts
AN310C9
Aeronautical Standard Plain Castellated Hexagon Nut
Description
Nuts
Specifications
| Bearing Surface Type | Washer faced |
|---|---|
| Material | Steel |
| Material Specification | 66 fed std single material response |
| Nut Height | 0.594 inches minimum and 0.625 inches maximum |
| Nut Style | Castellated, hexagon |
| Surface Treatment | Passivate |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 18 |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series | UNF |
| Thread Size | 0.562 |
| Width Across Flats | 0.863 inches minimum and 0.877 inches maximum |
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.
- AN310-9 AN 9/16-18 · Steel
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Catalog data updated 2026-07-05. Report a data error