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MS21090-0206
Military Standard Screw
Description
Fastener Length: 1/2", Thread: 2-56, Thread Length: 1/2"
Specifications
| Fastener Length | 0.469 inches minimum and 0.500 inches maximum |
|---|---|
| Head Diameter | 0.155 inches minimum and 0.167 inches maximum |
| Head Height | 0.053 inches minimum and 0.062 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/2 |
| Locking Feature | Pellet threads or strip threads |
| Material | Steel |
| Material Specification | 66 fed std single material response |
| 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,type 2,class 3 fed spec all treatment responses |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | 0.433 inches minimum and 0.500 inches maximum |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series Designator | UNC |
| Thread Size | 2 |
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.
- MS51957-7B MS #2-56 · 1/2 in · Pan Head · CRES
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Catalog data updated 2026-07-05. Report a data error