nuts › plain slotted hexagon nuts
AN320D5
Aeronautical Standard Plain Slotted Hexagon Nut
Description
Nut Height: 11/64", Width across flats: 1/2", Thread Size: 5/16, AN320 series nut
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Material | Aluminum |
| Material Specification | Qq-a-200/3 fed spec 1st material response or qq-a-225/6 fed spec 2nd material response or qq-a-250/4 fed spec 3rd material response |
| Nut Height | 0.172 inches minimum and 0.203 inches maximum |
| Nut Style | Slotted, hexagon |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Mil-a-8625 mil spec single treatment response |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNF |
| Thread Size | 0.312 |
| Width Across Flats | 0.490 inches minimum and 0.502 inches maximum |
Cross-reference
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Catalog data updated 2026-07-05. Report a data error