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AN320-7
Aeronautical Standard Plain Slotted Hexagon Nut
Description
Castellated Nut
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Countersink Angle | 110.0 degrees nut |
| Dimension A | 0.625 in |
| Dimension A Tolerance | +0.002 in |
| Dimension B | 0.719 in |
| Dimension H | 0.219 in |
| Industry Standards/Certification | AN320 |
| Material | Steel |
| Material Specification | Grade b national specification single material response |
| Minimum Ultimate Tensile Strength (Steel) | 6800 lb |
| NIIN | 00-176-8111 |
| NSN | 5310-00-176-8111 |
| Nondefinitive Specification/Std Data | 4 type and b grade |
| Nut Height | 0.219 |
| Nut Style | Hexagon slotted |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.438, 7/16-20 |
| Thread T | 0.4375-20 |
| Type | Cad Plated, Shear Castellated |
| Weight | 0.01 lb |
| Width Across Flats | Between 0.614 inches and 0.627 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 AN320-7. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error