nuts › self-locking nutplates
MS21055L4
Military Standard Locking Plate Nut Self
Description
1/4-28 thread, self-locking corner nutplate, low height, cadmium plated carbon steel, with dry film lube, plain rivet holes
Specifications
| Distance From Aperture Center To Mounting Hole Center | Between 0.495 inches and 0.505 inches |
|---|---|
| Hardness Rating | 49.0 rockwell c |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| Mounting Hole Arrangement Style | 2 holes |
| Mounting Hole Diameter | Between 0.098 inches and 0.103 inches |
| NIIN | 00-779-6619 |
| NSN | 5310-00-779-6619 |
| Nut Height | 0.281 |
| Nut Length | 0.852 |
| Nut Mounting Provision | Straight holes |
| Nut Style | Plate |
| Plate Thickness | 0.055 |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 3 federal specification single treatment response type 2 qq-p-416 |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.250 |
| Weight | .005 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21055L3
- MS21055L3K
- MS21055L4
- MS21055L5
- MS21055L06
- MS21055L08
- MS21055L08K
Cross-reference
Similar parts
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- MS21048-4 MS 1/4-28 · Iron
- MS21048-4K MS 1/4-28 · Iron
- MS21048L4 MS 1/4-28 · CRES
- MS21051-4 MS 1/4-28 · Steel
- MS21051L4 MS 1/4-28 · Steel
- MS21052-4 MS 1/4-28 · Iron
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error