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MS51959-8B
Military Standard Machine Screw
Description
Fastener Length: 5/8", Thread: 2-56, Thread Length: 9/16
Specifications
| Countersink Angle | 80.0 degrees minimum and 82.0 degrees maximum |
|---|---|
| Fastener Length | 0.594 inches minimum and 0.625 inches maximum |
| Head Diameter | 0.147 inches minimum and 0.172 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 5/8 |
| Material | CRES |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Screw Material | Steel corrosion resisting or steel |
| Screw Material Specification | Qq-s-763,300 series fed spec 1st material response or 66,300 series fed std 1st material response or comp 16-18 or 18-8 assn std 2nd material response |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | 0.507 inches minimum and 0.574 inches maximum |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series Designator | UNC |
| Thread Size | 2 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS51959-8B. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error