screws › socket head cap screws
MS16997-79
Hexagon Socket Cap Screw
Description
Fastener Length: 7/8", Thread: 1/4-18, Head Width: 1/4", Thread Length: 7/8
Specifications
| Fastener Length | 0.845 inches minimum and 0.875 inches maximum |
|---|---|
| Finish | Cadmium ll |
| Hardness Rating | 38.0 rockwell c minimum and 45.0 rockwell c maximum |
| Head Diameter | 0.457 inches minimum and 0.469 inches maximum |
| Head Height | 0.306 inches minimum and 0.312 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 7/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 170000 pounds per square inch |
| Minimum Yield Strength | 150000 pounds per square inch |
| Size | 5/16-18 |
| Specification Data | 80205-nas1352 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2 class 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 0.734 inches minimum and 0.875 inches maximum |
| Thread Qty | 18 |
| Thread Qty Per Inch (tpi) | 18 |
| Thread Series Designator | UNRC |
| Thread Size | 1/4 |
| Thread Type | N.C. - Coarse |
| Width Across Flats | 0.250 inches minimum and 0.253 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for MS16997-79. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error