nuts › self-locking extended washer nuts
MS21042-4
Military Standard Locking Extended Washer Nut Self
Description
Nut
Specifications
| Alternate Part Number | REPUBLIC, EK075A & GA301 |
|---|---|
| Features | Reduced Height |
| Industry Standards/Certification | MS21042 |
| Lubricant | Without Dry Film Lubricant |
| Material | CRES |
| Maximum Diameter A | 0.420 in |
| Maximum Dimension H | 0.219 in |
| Maximum W (Across Flats) | 0.316 in |
| Minimum Dimension C | 0.347 in |
| Minimum Dimension H | 0.204 in |
| Minimum W (Across Flats) | 0.304 in |
| Service Temperature | 450 ºF |
| Shape | Reduced Hexagon |
| Surface Treatment | Cadmium |
| Thread | 0.2500-28, 1/4-28 |
| Thread Size | 1/4-28 |
| Type | Dry Hex Nut, Self-Locking Nut |
| Weight | 0.0032 lb |
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 MS21042-4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error