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NAS1351N4-28
Socket Head Cap Screw
Description
Socket Head Cap Screw
Specifications
| Fastener Length | 3.720 inches minimum and 3.750 inches maximum |
|---|---|
| Hardness Rating | 33.0 rockwell c minimum and 42.0 rockwell c maximum |
| Head Diameter | 0.365 inches minimum and 0.375 inches maximum |
| Head Height | 0.244 inches minimum and 0.250 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Material | Iron |
| Material Specification | Ams 5731 assn std single material response or ams 5737 assn std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 1.000 inches minimum and 3.750 inches maximum |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNRF |
| Width Across Flats | 0.188 inches minimum and 0.190 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1351N4-28. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error