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MS21090-0835
Military Standard Screw
Description
Fastener Length: 5/16", Thread: 8-32, Thread Length: 5/16"
Specifications
| Departure From Cited Designator | As mod by locking element |
|---|---|
| Fastener Length | 0.281 inches minimum and 0.312 inches maximum |
| Head Diameter | 0.306 inches minimum and 0.322 inches maximum |
| Head Height | 0.105 inches minimum and 0.115 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 5/16 |
| Locking Feature | Pellet threads or strip threads |
| Material | Steel |
| Min. Tensile Strength (psi) | 60000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type and 9c style |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 3 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.164 |
| Thread Direction | Right-hand |
| Thread Length | 0.219 inches minimum and 0.312 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNC |
| Thread Size | 8 |
Cross-reference
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Catalog data updated 2026-07-05. Report a data error