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MS21080-5
Military Standard One Lug Locknut Plate
Description
Thread Size: 1/4", Nut Length: 1-1/4", Nut Height: 3/8"
Specifications
| Center To Center Distance Between Mounting Holes Along Length | 0.310 inches minimum and 0.314 inches maximum |
|---|---|
| Distance From Aperture Center To Mounting Hole Center | 0.495 inches minimum and 0.505 inches maximum |
| Hardness Rating | 32.0 rockwell c maximum |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Material | Plastic |
| Mounting Hole Arrangement Style | 2 holes |
| Mounting Hole Diameter | 0.130 inches minimum and 0.135 inches maximum |
| Nut Height | 0.271 inches minimum and 0.375 inches maximum |
| Nut Length | 1.250 inches maximum |
| Nut Mounting Provision | Straight holes |
| Nut Style | Plate |
| Plate Thickness | 0.075 inches maximum |
| Plate Width | 0.500 inches minimum and 0.531 inches maximum |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec single treatment response nut |
| Temperature Rating | 250.0 deg fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNJF |
| Thread Size | 0.312 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21080-3
- MS21080-3K
- MS21080-4
- MS21080-5
- MS21080-06
- MS21080-08
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.
- MS21078-5 MS 5/16-24 · Plastic
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error