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NAS1351-4-28
Socket Head Cap Screw
Description
Socket Head Cap Screw
Specifications
| Color | Black |
|---|---|
| Country of Origin | USA |
| Fastener Length | 1.710 inches minimum and 1.750 inches maximum |
| Hardness Rating | 38.0 rockwell c minimum and 45.0 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 |
| Hole Configuration Style | Round |
| Hole Diameter | 0.044 inches minimum and 0.050 inches maximum |
| Hole Quantity | 6 |
| Hole Type | Drilled |
| Internal Drive Style | Hexagon |
| Material | Steel |
| Min. Tensile Strength (psi) | 170000 pounds per square inch |
| Minimum Yield Strength | 150000 pounds per square inch |
| NIIN | 01-120-9415 |
| NSN | 5305-01-120-9415 |
| Sold In | EA |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Finish | 32.0 microinches threads, 63.0 microinches bearing surface of head |
| Surface Treatment | Oxide |
| Surface Treatment Specification | Mil-c-13924,class 1 mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 1.000 inches minimum |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNRF |
| Weight | .005 lb |
| 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 NAS1351-4-28. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error