nuts › self-locking hexagon nuts
AN363-820
0.5625-18 Thread Size MS21045 (AN363) Self-Locking Machine Nut
Description
Self-Locking Hexagon Nut
Specifications
| Features | Regular Height |
|---|---|
| Industry Standards/Certification | AN363 |
| Locking Feature | Free-running all metal design |
| Material | Steel |
| Maximum Dimension A | 0.610 in |
| Maximum Dimension B | 0.752 in |
| Minimum Dimension A | 0.575 in |
| Minimum Dimension B | 0.741 in |
| Minimum Dimension C | 0.837 in |
| Minimum Dimension F | 0.221 in |
| Nut Height | 0.594 |
| Nut Style | Hexagon |
| Service Temperature | 450 ºF |
| Surface Treatment | Cadmium or zinc |
| Surface Treatment Specification | An-p-61 fed std single treatment response or mil-p-688,ty 1 mil spec single treatment response |
| Temperature Rating | 550.0 deg fahrenheit |
| Thread | 1/2-20 |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread MIL-S-8879 | 0.5625-18 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNF |
| Thread Size | 0.500, 1/2-20 |
| Type | Cad Plated, Self-Locking Nut |
| Weight | .005 lb |
| Width Across Flats | 0.750 |
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 AN363-820. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error