screws › socket head cap screws
NAS1352-4-8P
MS16997-58 Socket Head Cap Screw
Description
Fastener Length: 1/2", Thread: 1/4-20, Head Width: 3/16", Thread Length: 1/2", NAS1352 series screw
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 0.470 inches and 0.500 inches |
| Hardness Rating | 38.0 rockwell c and 45.0 rockwell c |
| Head Diameter | Between 0.365 inches and 0.375 inches |
| Head Height | Between 0.244 inches and 0.250 inches |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | .50, 1/2 |
| Material | Steel |
| Min. Tensile Strength (psi) | 170000 pounds per square inch |
| Minimum Yield Strength | 150000 pounds per square inch |
| Specification Data | 80205-nas1352 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification all treatment responses type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Fraction | 1/4-20 |
| Thread Length | Between 0.446 inches and 0.500 inches |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNRC |
| Thread Series Designator | UNRC |
| Thread Size | 1/4 |
| Width Across Flats | Between 0.188 inches and 0.190 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
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.
- NAS1352N4-8 NAS 1/4-20 · 1/2 in · Flat chamfer · Iron
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Catalog data updated 2026-07-05. Report a data error