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MS51958-84
Military Standard Machine Screw
Description
Fastener Length: 1-1/4", Thread: 1/4-28, Thread Length: 1-1/4", MS51958 series screw
Specifications
| Fastener Length | 1.250 |
|---|---|
| Finish | Passivate |
| Head Diameter | Between 0.473 inches and 0.492 inches |
| Head Height | Between 0.162 inches and 0.175 inches |
| Head Style | Phillips Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/4 |
| Material | CRES |
| Material Specification | 66 federal standard all material responses |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Size | 1/4-28 |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.179 inches and 1.250 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
| 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.
- MS35207-284 MS 1/4-28 · 0.073 in · Phillips Pan Head · Steel
- MS35215-74 MS 1/4-28 · 0.073 in · Phillips Pan Head · Brass
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Catalog data updated 2026-07-05. Report a data error