nuts › self-locking nutplates
MS21078-5
Military Standard Locking Nutplate Self
Description
Thread Size: 1/4", Nut Length: 1-1/4", Nut Height: 3/8
Specifications
| Center To Center Distance Between Mounting Holes Along Length | Between 0.998 inches and 1.002 inches |
|---|---|
| Countersink Angle | 88.0 degrees nut and 102.0 degrees nut |
| Distance From Aperture Center To Mounting Hole Center | Between 0.495 inches and 0.505 inches |
| Hardness Rating | 32.0 rockwell c |
| Locking Feature | Prevailing torque with nonmetallic insert |
| Material | Plastic |
| Mounting Hole Arrangement Style | 2 holes |
| Mounting Hole Diameter | Between 0.130 inches and 0.135 inches |
| Nut Height | Between 0.271 inches and 0.375 inches |
| Nut Length | 1.296 |
| Nut Mounting Provision | Straight holes |
| Nut Style | Plate |
| Plate Thickness | 0.075 |
| Plate Width | Between 0.500 inches and 0.531 inches |
| Surface Treatment | Cadmium except insert |
| Surface Treatment Specification | Cl 3 federal specification single treatment response except insert type 2 qq-p-416 |
| Temperature Rating | 250.0 degrees fahrenheit |
| Thread Class | 3b |
| 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 | 0.312 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- MS21080-5 MS 5/16-24 · Plastic
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Catalog data updated 2026-07-05. Report a data error