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MS51960-102
Flat Countersunk Head Machine Screw
Description
Fastener Length: 1-3/16", Thread: 5/16-24, Thread Length: 0-59/64"
Specifications
| Countersink Angle | 80.0 degrees minimum and 82.0 degrees maximum |
|---|---|
| Fastener Length | 1.188 inches minimum and 1.250 inches maximum |
| Finish | Passivate per QQ-P-35 |
| Head Diameter | 0.568 inches minimum and 0.635 inches maximum |
| Head Style | Flat countersunk, Phillips Flat Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/4 |
| Material | CRES |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Nondefinitive Specification/Std Data | 3 type and 2c style |
| Screw Material | Steel corrosion resisting |
| Screw Material Specification | Qq-s-763,300 series fed spec single material response or 66,300 series fed std single material response or comp 16-18 or 18-8 assn std single material response |
| 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 Fraction | 5/16-24 |
| Thread Length | 0.914 inches minimum and 1.059 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Thread Type | N.F. - Fine, UNC-2A |
Cross-reference
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Catalog data updated 2026-07-05. Report a data error