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MS51958-82
1/4-28 X 7/8 MS51958 NAS-1635 Phil Pan Machine Screw Fine Full Thread 300 Series S/S DFAR
Description
Fastener Length: 7/8", Thread: 1/4-28, Thread Length: 7/8", MS51958 series screw
Specifications
| Diameter | 1/4 |
|---|---|
| Drive | Phillips |
| Drive Type | Phillips |
| End Application | Tomahawk phoenix (aim-54); missile air-to-air (02m jul83)(an/uyq-3a); missile sidewinder (aim-9); airborne mobile dir air spt ctl (2id) air intercept b-52 aircraft; missile hc-130); support equipment ec-130e mc-130h b-1 aircraft; aircraft (ac-130h an/tyc-39a; close in weapon system (ciws-phalanx); support equipment w/s:central message switch |
| Fastener Length | 0.875 |
| Finish | Passivate, Plain |
| Full Size | 1/4-28 x 7/8 |
| 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 |
| Head Type | Pan |
| Internal Drive Style | Cross recess type 1 |
| Length | 7/8 |
| Material | CRES |
| MilspecPart | MS51958 |
| 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 federal standard all material responses |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Size | 1/4-28 |
| Thread Class | 2a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.804 inches and 0.875 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, UNF |
| Threads Per Inch | 28 |
| U.O.M. | Imperial |
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.
- MS35207-282 MS 1/4-28 · 7/8 in · Phillips Pan Head · Steel
- MS35219-72 MS 1/4-28 · 7/8 in · Phillips Pan Head · Aluminum
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Catalog data updated 2026-07-05. Report a data error