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MS16998-11
Hexagon Socket Cap Screw
Description
Fastener Length: 1/2", Thread: 6-40, Head Width: 7/64", Thread Length: 1/2"
Specifications
| Fastener Length | 0.470 inches minimum and 0.500 inches maximum |
|---|---|
| Finish | Cadmium ll |
| Hardness Rating | 38.0 rockwell c minimum and 45.0 rockwell c maximum |
| Head Diameter | 0.218 inches minimum and 0.226 inches maximum |
| Head Height | 0.134 inches minimum and 0.138 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1/2 |
| Material | Steel |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| Minimum Yield Strength | 155000 pounds per square inch |
| Size | 6-40 |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.138 |
| Thread Direction | Right-hand |
| Thread Length | 0.420 inches minimum and 0.500 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNRF |
| Thread Size | 6 |
| Thread Type | N.F. - Fine |
| Width Across Flats | 0.109 inches minimum and 0.111 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.
- NAS1351N06-8 NAS #6-40 · 1/2 in · Flat chamfer · Iron
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Catalog data updated 2026-07-05. Report a data error