screws › socket head cap screws
NAS1351-03-4P
Socket Head Cap Screw
Description
Fastener Length: 1/4", Thread: 3-56, Head Width: 5/64", Thread Length: 1/4", NAS1351 series screw
Specifications
| Fastener Length | 0.220 inches minimum and 0.250 inches maximum |
|---|---|
| Hardness Rating | 39.0 rockwell c minimum and 45.0 rockwell c maximum |
| Head Diameter | 0.154 inches minimum and 0.161 inches maximum |
| Head Height | 0.095 inches minimum and 0.099 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1/4 |
| Material | Steel |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| Minimum Yield Strength | 155000 pounds per square inch |
| 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 | 0.099 |
| Thread Direction | Right-hand |
| Thread Length | 0.184 inches minimum and 0.250 inches maximum |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series Designator | UNRF |
| Thread Size | 3 |
| Width Across Flats | 0.078 inches minimum and 0.079 inches maximum |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1351-03-4P. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error