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MS21075L4
Military Standard Locking Nutplate Self
Description
Nutplate (Old Revision)
Specifications
| Alternate Part Number | MS21075L4N |
|---|---|
| Center To Center Distance Between Mounting Holes Along Length | 0.560 inches minimum and 0.564 inches maximum |
| Distance From Aperture Center To Mounting Hole Center | 0.276 inches minimum and 0.286 inches maximum |
| Features Provided | Floating nut |
| Hardness Rating | 49.0 rockwell c maximum |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Dry film lubricant |
| Material | Steel |
| Material Specification | Ams5080 assn std 1st material response or ams5085 assn std 2nd material response or ams6350 assn std 3rd material response or astma682 assn std 4th material response or astma576 assn std 5th material response or ams6359 assn std all material responses or ams6322 assn std 6th material response |
| Mounting Hole Arrangement Style | 2 holes |
| Mounting Hole Diameter | 0.098 inches minimum and 0.103 inches maximum |
| NIIN | 01-361-1188 |
| NSN | 5310-01-361-1188 |
| Nut Height | 0.281 inches maximum |
| Nut Length | 0.801 inches maximum |
| Nut Mounting Provision | Straight holes |
| Nut Style | Plate (floating) |
| Plate Thickness | 0.027 inches minimum and 0.090 inches maximum |
| Plate Width | 0.350 inches minimum and 0.500 inches maximum |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty2,cl2 fed spec 2nd treatment response |
| Temperature Rating | 450.0 deg fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| 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.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS21075L4 — functionally equivalent.
- MS21075L4N Listed alternate 1/4-28 · Steel
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- MS21075-4E MS 1/4-28 · Steel
- MS21075-4N MS 1/4-28 · Steel
- MS21076-4N MS 1/4-28 · Iron
- MS21076-4R MS 1/4-28 · Iron
- MS21076L4N 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