nuts › self-locking nutplates
MS21051-3
Military Standard Locking Nutplate Self
Description
Thread Size: 3/16", Nut Length: 15/16", Nut Height: 1/4"
Specifications
| Center To Center Distance Between Mounting Holes Along Length | Between 0.310 inches and 0.314 inches |
|---|---|
| Counterbore Diameter | 0.194 inches nut |
| Distance From Aperture Center To Mounting Hole Center | Between 0.339 inches and 0.349 inches |
| Hardness Rating | 49.0 rockwell c |
| Height | 0.250 |
| Length | 0.950 |
| Locking Feature | Prevailing torque all metal design |
| Lubrication | Soluble lubricant |
| Material | Steel |
| Mounting Hole Arrangement Style | 2 holes |
| Mounting Hole Diameter | Between 0.098 inches and 0.103 inches |
| Nut Counterbore Depth | 0.062 inches nut |
| Nut Mounting Provision | Straight holes |
| Nut Style | Plate |
| Plate Thickness | 0.047 |
| Plate Width | Between 0.308 inches and 0.328 inches |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification all treatment responses type 2 qq-p-416 |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.190 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21051-3
- MS21051-4
- MS21051-06
- MS21051-08
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS21051-3. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error