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MS21090-0202
Military Standard Machine Screw
Description
Machine Screw part number MS21090-0202
Specifications
| Fastener Length | Between 0.219 inches and 0.250 inches |
|---|---|
| Head Diameter | Between 0.155 inches and 0.167 inches |
| Head Height | Between 0.053 inches and 0.062 inches |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/4 |
| Locking Feature | Pellet threads or strip threads |
| Material | Steel |
| Material Specification | Qq-s-634 federal specification single material response or qq-s-637 federal specification single material response or 66 federal standard single material response |
| Min. Tensile Strength (psi) | 60000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type or 9c style |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 type 2 cl 3 federal specification single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.183 inches and 0.250 inches |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series Designator | Unc (coarse thread) |
| 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.
- NAS1100-02-4 NAS #2-56 · 1/4 in · Pan Head · Steel
- MS51957-3B MS #2-56 · 1/4 in · Pan Head · CRES
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Catalog data updated 2026-07-05. Report a data error