screws › machine screws
MS3213-9
Military Standard Machine Screw
Description
Fastener Length: 7/8", Thread: 4-40, Thread Length: 7/8", screwseal, MS3213 series screw
Specifications
| Fastener Length | 0.844 inches minimum and 0.875 inches maximum |
|---|---|
| Head Diameter | 0.205 inches minimum and 0.238 inches maximum |
| Head Height | 0.070 inches minimum and 0.080 inches maximum |
| Head Style | Watertight |
| Internal Drive Style | Cross recess type 1 |
| Length | 7/8 |
| Material | CRES |
| Min. Tensile Strength (psi) | 75000 pounds per square inch |
| Screw Material | Steel corrosion resisting |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Special Features | Furnished with one @o-ring for self-sealing purposes |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.794 inches minimum and 0.875 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| Thread Size | 4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS3213-9. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error