screws › socket head cap screws
NAS1352N4-28
Socket Head Cap Screw
Description
Fastener Length: 1-23/32", Thread: 1/4-20, Head Width: 3/16", Thread Length: 1-1/64
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 1.710 inches and 1.750 inches |
| Hardness Rating | 33.0 rockwell c and 42.0 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 | 1 3/4 |
| Material | Iron |
| Material Specification | Ams5731 assn standard single material response or ams5737 assn standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1531 professional/industrial association standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 1.000 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNRC |
| Thread Series Designator | UNRC |
| Thread Size | 1/4 |
| Width Across Flats | Between 0.1875 inches and 0.1900 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.
- NAS1352C4-20 NAS 1/4-20 · 0.073 in · Flat chamfer · CRES
- NAS1352C4-28 NAS 1/4-20 · 0.073 in · Flat chamfer · CRES
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Catalog data updated 2026-07-05. Report a data error