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MS51957-18B
4-40X5/8 MS51957-B Phil Pan M/S Coarse Full Thread 300 Series S/S DFAR Black Ox
Description
Length: 5/8", Thread: 4-40, Thread Length: 5/8", pan head, MS51957 series screw
Specifications
| Diameter | #4 |
|---|---|
| Drive | Phillips |
| Drive Type | Phillips |
| Fastener Length | 0.594 inches minimum and 0.625 inches maximum |
| Finish | Black Oxide |
| Full Size | #4-40 x 5/8 |
| Head Diameter | 0.205 inches minimum and 0.219 inches maximum |
| Head Height | 0.070 inches minimum and 0.080 inches maximum |
| Head Style | Pan Head |
| Head Type | Pan |
| Internal Drive Style | Cross recess type 1 |
| Length | 5/8 |
| Material | CRES |
| MilspecPart | MS51957-B |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type and 9c style |
| Screw Material | Steel corrosion resisting or steel comp 305 |
| Screw Material Specification | E30509-1,fscm 19315 mfr ref 1st material response |
| Size | 4-40 |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.544 inches minimum and 0.625 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| Thread Size | 4 |
| Thread Type | UNC |
| Threads Per Inch | 40 |
| U.O.M. | Imperial |
Cross-reference
Similar parts
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Catalog data updated 2026-07-05. Report a data error