nuts › plain hexagon nuts
AN121502
Aeronautical Standard Plain Hexagon Nut
Description
Engine Nut
Specifications
| Alternate Part Number | AN360-4 |
|---|---|
| Bearing Surface Finish | 63.0 microinches |
| Bearing Surface Type | Chamfered or washer faced |
| Countersink Angle | 85.0 degrees nut and 95.0 degrees nut |
| Dimension H | 0.219 in |
| Industry Standards/Certification | AN121502 |
| Material | Steel |
| Material Specification | Ams 6322 assn standard single material response |
| Maximum Dimension A | 0.430 in |
| Minimum Dimension A | 0.439 in |
| Minimum Dimension B | 0.491 in |
| NIIN | 00-282-4778 |
| NSN | 5310-00-282-4778 |
| Nut Height | Between 0.209 inches and 0.229 inches |
| Nut Style | Hexagon |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Ams 2400 assn standard single treatment response |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.250-28 |
| Type | Plain |
| Weight | .005 lb |
| Width Across Flats | Between 0.430 inches and 0.439 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for AN121502. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error