nuts › self-locking nutplates
MS21055L3K
Military Standard Locking Plate Nut Self
Description
10-32 thread - self-locking corner nutplate - low height - cadmium plated carbon steel - 450°, - with dry film lube - countersunk rivet holes
Specifications
| Alternate Part Number | NAS684A3K |
|---|---|
| Counterbore Diameter | 0.194 inches minimum nut |
| Distance From Aperture Center To Mounting Hole Center | 0.339 inches minimum and 0.349 inches maximum |
| Hardness Rating | 49.0 rockwell c maximum |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| Mounting Hole Arrangement Style | 2 holes |
| Mounting Hole Countersink Angle | 98.0 degrees minimum and 102.0 degrees maximum |
| Mounting Hole Diameter | 0.098 inches minimum and 0.103 inches maximum |
| Mounting Provision Location | Opposite nut projection side |
| NIIN | 00-778-9278 |
| NSN | 5310-00-778-9278 |
| Nut Counterbore Depth | 0.062 inches minimum nut |
| Nut Height | 0.250 inches maximum |
| Nut Length | 0.653 inches maximum |
| Nut Mounting Provision | Countersunk holes |
| Nut Style | Plate |
| Plate Thickness | 0.047 inches maximum |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 fed spec single treatment response |
| Temperature Rating | 450.0 deg fahrenheit maximum |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNJF |
| Thread Size | 0.190 |
| Weight | 0.003 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
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- BACN10JP3ACM BAC #10-32 · Iron
- NAS697A3 NAS #10-32 · Steel
- NAS698C3 NAS #10-32 · Iron
- MS21047-3 MS #10-32 · Steel
- MS21047-3K MS #10-32 · Steel
- MS21047L3 MS #10-32 · Steel
- MS21047L3K MS #10-32 · Steel
- MS21048-3K MS #10-32 · Iron
- MS21048L3 MS #10-32 · Iron
- MS21048L3K MS #10-32 · CRES
- MS21048L3W MS #10-32 · Iron
- MS21051L3 MS #10-32 · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error