nuts › self-locking nutplates
MS21078-8
Military Standard Locking Nutplate Self
Description
Thread: 1/2-20, Thread Size: 1/2", Nut Height: 5/8", Nut Length: 1-5/8
Specifications
| Center To Center Distance Between Mounting Holes Along Length | Between 1.248 inches and 1.252 inches |
|---|---|
| Countersink Angle | 88 degrees and 102 degrees |
| Distance From Aperture Center To Mounting Hole Center | Between 0.620 inches and 0.630 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 0.161 inches and 0.166 inches |
| Nut Height | Between 0.575 inches and 0.609 inches |
| Nut Length | 1.602 |
| Nut Mounting Provision | Straight holes |
| Nut Style | Plate |
| Plate Thickness | 0.115 |
| Plate Width | Between 0.796 inches and 0.859 inches |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Cl 3 federal specification single treatment response nut type 2 qq-p-416 |
| Temperature Rating | 450 degrees fahrenheit |
| Thread Class | 3b |
| Thread Direction | Right-hand |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | Unf (fine thread) |
| Thread Size | 0.50 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error