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MS3212-2
Military Standard Machine Screw
Description
Fastener Length: 5/16", Thread: 4-40, Thread Length: 5/16", pan head with seal, MS3212 series screw
Specifications
| Drive Style | Cross |
|---|---|
| Fastener Length | Between 0.281 inches and 0.312 inches |
| Head Diameter | Between 0.205 inches and 0.238 inches |
| Head Height | Between 0.070 inches and 0.080 inches |
| Head Style | Watertight |
| Internal Drive Style | Cross recess type 1 |
| Length | 5/16 |
| Material | Steel |
| Special Features | Furnished with one silicone rubber o ring |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.231 inches and 0.312 inches |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 4 |
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.
- MS3213-2 MS #4-40 · 5/16 in · Watertight · Steel
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Catalog data updated 2026-07-05. Report a data error