nuts › plain hexagon nuts
AN150408
Aeronautical Standard Nut
Description
Thread Size: 1/4", Nut Height: 1/8", Head Width: 3/8"
Specifications
| Bearing Surface Finish | 60.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Countersink Angle | 88.0 degrees minimum nut and 92.0 degrees maximum nut |
| Hardness Rating | 19.0 rockwell c minimum and 26.0 rockwell c maximum |
| Material | Steel |
| Material Specification | Ams 6320 assn std 1st material response or ms 6325 assn std single material response |
| Nut Height | 0.115 inches minimum and 0.135 inches maximum |
| Nut Style | 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
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Catalog data updated 2026-07-05. Report a data error