nuts › self-locking nutplates
MS21056L3K
Military Standard Locking Nutplate Self
Description
Thread Size: 1/4", Nut Length: 5/8", Nut Height: 1/4
Specifications
| 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 | Iron |
| Mounting Hole Arrangement Style | 2 holes |
| Mounting Hole Countersink Angle | 100.0 degrees |
| Mounting Hole Diameter | 0.098 inches minimum and 0.103 inches maximum |
| Mounting Provision Location | Opposite nut projection side |
| 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 or dimpled holes |
| Nut Style | Plate |
| Plate Thickness | 0.047 inches maximum |
| Temperature Rating | 450.0 deg fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNJF |
| Thread Size | 0.190 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21056L3
- MS21056L3K
- MS21056L4
- MS21056L06
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.
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- 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