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AN121552
Aeronautical Standard Nut
Description
Nuts
Specifications
| Bearing Surface Type | Washer faced |
|---|---|
| Countersink Angle | 85.0 degrees minimum nut and 95.0 degrees maximum nut |
| Material | Steel |
| Material Specification | Ams 6322 assn std single material response |
| Nut Height | 0.272 inches minimum and 0.292 inches maximum |
| Nut Style | Castellated, hexagon |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Ams 2400 assn std single treatment response |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Size | 0.250 |
| Width Across Flats | 0.430 inches minimum and 0.439 inches maximum |
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 AN121552. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error