screws › socket head cap screws
MS16997-31L
Military Standard Screw
Description
Fastener Length: 3/8", Thread: 8-32, Head Width: 9/64", Thread Length: 3/8"
Specifications
| Fastener Length | 0.344 inches minimum and 0.375 inches maximum |
|---|---|
| Head Diameter | 0.262 inches minimum and 0.270 inches maximum |
| Head Height | 0.159 inches minimum and 0.164 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 3/8 |
| Locking Feature | Patch threads or pellet threads or strip threads |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Thread Class | 3a |
| Thread Diameter | 0.164 |
| Thread Direction | Right-hand |
| Thread Length | 0.282 inches minimum and 0.375 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNC |
| Thread Size | 8 |
| Width Across Flats | 0.141 inches minimum and 0.143 inches maximum |
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.
- 655-590-9106 Commercial #8-32 · 3/8 in · Flat chamfer · Iron
- NAS1352-08-6 NAS #8-32 · 3/8 in · Flat chamfer · Steel
- NAS1352C08-6 NAS #8-32 · 3/8 in · Flat chamfer · Steel
- NAS1352C08LE6 NAS #8-32 · 3/8 in · Flat chamfer · CRES
- NAS1352N08-6 NAS #8-32 · 3/8 in · Flat chamfer · Iron
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error