screws › socket head cap screws
MS16997-4
Hexagon Socket Cap Screw
Description
Fastener Length: 1/2", Thread: 2-56, Head Width: 5/64", Thread Length: 1/2", MS16997 series screw
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 0.469 inches and 0.500 inches |
| Finish | Cadmium ll |
| Hardness Rating | 36.0 rockwell c and 45.0 rockwell c |
| Head Diameter | Between 0.134 inches and 0.140 inches |
| Head Height | Between 0.083 inches and 0.086 inches |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1/2 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Minimum Yield Strength | 130000 pounds per square inch |
| Nondefinitive Specification/Std Data | 6 type |
| Size | 2-56 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 3 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.433 inches and 0.500 inches |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 2 |
| Thread Type | N.C. - Coarse |
| Width Across Flats | Between 0.078 inches and 0.079 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.
- NAS1352-02-8 NAS #2-56 · 1/2 in · Flat chamfer · Steel
- NAS1352-02-8P NAS #2-56 · 1/2 in · Flat chamfer · Steel
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Catalog data updated 2026-07-05. Report a data error