nuts › locknuts
MS21071L6
Military Standard Locknut
Description
Thread Size: 3/8", Nut Length: 1-1/8", Nut Height: 11/32
Specifications
| Center To Center Distance Between Mounting Holes Along Length | Between 0.267 inches and 0.271 inches |
|---|---|
| Counterbore Diameter | 0.379 inches nut |
| Distance From Aperture Center To Mounting Hole Center | Between 0.409 inches and 0.419 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 0.130 inches and 0.135 inches |
| Nut Counterbore Depth | 0.062 inches nut |
| Nut Height | 0.344 |
| Nut Length | 1.139 |
| Nut Mounting Provision | Straight holes |
| Nut Style | Plate |
| Plate Thickness | 0.075 |
| Plate Width | Between 0.580 inches and 0.614 inches |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 federal specification single treatment response |
| Temperature Rating | 450.0 degrees fahrenheit |
| Thread Class | 2b |
| Thread Direction | Right-hand |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.375 |
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.
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error