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MS51958-99
Military Standard Machine Screw
Description
MS 51958-99 Phillips Pan Head Machine Screw
Specifications
| Fastener Length | 1.250 |
|---|---|
| Finish | Passivate |
| Head Diameter | 0.594 inches minimum and 0.615 inches maximum |
| Head Height | 0.203 inches minimum and 0.218 inches maximum |
| Head Style | Phillips Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/4 |
| 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 | 5/16-24 |
| Thread Class | 2a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 1.167 inches minimum and 1.250 inches maximum |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNF |
| Thread Type | N.F. - Fine |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS51958-99. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error