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AN320D7
Aeronautical Standard Castellated Plain Nut
Description
Thread Size: 7/16", Nut Height: 15/64", Head Width: 39/64"
Specifications
| Bearing Surface Finish | 125.0 microinches |
|---|---|
| Bearing Surface Type | Chamfered or washer faced |
| Material | Aluminum |
| Material Specification | Qq-a-200/3 fed spec single material response or qq-a-225/6 fed spec single material response or qq-a-250/4 fed spec single material response |
| Nut Height | 0.203 inches minimum and 0.234 inches maximum |
| Nut Style | Slotted, hexagon |
| Surface Treatment | Chromate |
| Surface Treatment Specification | Mil-c-5541 mil spec single treatment response or mil-a-8625 mil spec single treatment response |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNF |
| Thread Size | 0.438 |
| Width Across Flats | 0.614 inches minimum and 0.627 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.
- AN320C7 AN 7/16-20 · Steel
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Catalog data updated 2026-07-05. Report a data error