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MS51957-120
Pan Head Machine Screw
Description
MS 51957-120 Phillips Pan Head Machine Screw
Specifications
| Country of Origin | USA |
|---|---|
| Drive Style | Phillips |
| Fastener Length | Between 0.532 inches and 0.562 inches |
| Finish | Passivate |
| Head Angle | 100 ? |
| Head Diameter | Between 0.205 inches and 0.219 inches |
| Head Height | Between 0.070 inches and 0.080 inches |
| Head Style | Phillips Pan Head |
| Head Type | Pan |
| Industry Standards/Certification | MS51957 |
| Internal Drive Style | Cross recess type 1 |
| Length | 0.562, 9/16 |
| Material | CRES |
| NIIN | 00-177-5545 |
| NSN | 5305-00-177-5545 |
| Screw Material | Stainless steel |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Mil-f-14072 finish e300 military specification single treatment response |
| Size | 4-40 |
| Specification Data | 80205-nas1635 professional/industrial association standard |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Fraction | 4-40 |
| Thread Length | Between 0.482 inches and 0.562 inches |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 4-40 |
| Thread Type | N.C. - Coarse, UNC-2A |
| Weight | .0015 lb |
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.
- MS35206-323 MS #4-40 · 9/16 in · Phillips Pan Head · Steel
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Catalog data updated 2026-07-05. Report a data error