nuts › plain slotted hexagon nuts
AN320-18
Aeronautical Standard Plain Slotted Hexagon Nut
Description
Thread Size: 1-1/8", Nut Height: 1/2", Head Width: 1-5/8
Specifications
| Bearing Surface Type | Chamfered or washer faced |
|---|---|
| Countersink Angle | 110.0 degrees nut |
| Material | Steel |
| Nondefinitive Specification/Std Data | 4 type and b grade or c grade |
| Nut Height | 0.562 |
| 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 | 12 |
| Thread Qty Per Inch (tpi) | 12 |
| Thread Series | Unf (fine thread) |
| Thread Size | 1.125 |
| Width Across Flats | Between 1.667 inches and 1.690 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 AN320-18. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error