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MS51958-34
Military Standard Machine Screw
Description
Fastener Length: 1-", Thread: 6-40, Thread Length: 0-63/64
Specifications
| Fastener Length | 1.000 |
|---|---|
| Finish | Passivate |
| Head Diameter | 0.256 inches minimum and 0.270 inches maximum |
| Head Height | 0.087 inches minimum and 0.097 inches maximum |
| Head Style | Phillips Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 |
| Material | CRES |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Screw Material | Steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 |
| Screw Material Specification | 66 fed std all material responses |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Size | 6-40 |
| Thread Class | 2a |
| Thread Diameter | 0.138 |
| Thread Direction | Right-hand |
| Thread Length | 0.950 inches minimum and 1.000 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNF |
| Thread Size | 6 |
| Thread Type | N.F. - Fine |
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.
- MS35207-234 MS #6-40 · 0.073 in · Phillips Pan Head · Steel
- MS35215-31 MS #6-40 · 0.073 in · Phillips Pan Head · Brass
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Catalog data updated 2026-07-05. Report a data error