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MS18211-4C
Military Standard Screw
Description
Fastener Length: 9/32", Thread: 2-56, Thread Length: 17/64"
Specifications
| Countersink Angle | 80.0 degrees minimum and 82.0 degrees maximum |
|---|---|
| Fastener Length | 0.281 inches minimum and 0.312 inches maximum |
| Head Diameter | 0.147 inches minimum and 0.172 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Slot |
| Length | 5/16 |
| Screw Material | Plastic polyethylene |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | 0.261 inches minimum |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series Designator | UNC |
| Thread Size | 2 |
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.
- MS51959-4B MS #2-56 · 5/16 in · Flat countersunk · CRES
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Catalog data updated 2026-07-05. Report a data error