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AN320C9
Aeronautical Standard Plain Slotted Hexagon Nut
Description
Castellated Nut
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Material | Steel |
| NIIN | 00-543-5072 |
| NSN | 5310-00-543-5072 |
| Nut Height | 0.297 inches minimum and 0.328 inches maximum |
| Nut Style | Slotted, 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 |
| Weight | 0.03 lb |
| 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.
- AN320-9 AN 9/16-18 · Steel
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Catalog data updated 2026-07-05. Report a data error