screws › socket head cap screws
MS16995-78
Hexagon Socket Cap Screw
Description
Fastener Length: 5/8", Thread: 3/8-16, Head Width: 5/16", Thread Length: 5/8"
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 0.595 inches and 0.625 inches |
| Finish | Passivate |
| Hardness Rating | 80.0 rockwell b |
| Head Diameter | Between 0.550 inches and 0.563 inches |
| Head Height | Between 0.368 inches and 0.375 inches |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 5/8 |
| Material | CRES |
| Material Specification | 66 federal standard all material responses |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Minimum Yield Strength | 30000 pounds per square inch |
| Nondefinitive Specification/Std Data | 6 type |
| Size | 3/8-16 |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.470 inches and 0.625 inches |
| Thread Qty | 16 |
| Thread Qty Per Inch (tpi) | 16 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 3/8 |
| Thread Type | N.C. - Coarse |
| Width Across Flats | Between 0.312 inches and 0.316 inches |
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.
- NAS1352C6-10 NAS 3/8-16 · 5/8 in · Flat chamfer · CRES
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Catalog data updated 2026-07-05. Report a data error