screws › socket head cap screws
NAS1351-4-12P
MS16998-43 Socket Head Cap Screw
Description
Fastener Length: 49/64", Thread: 1/4-28, Head Width: 3/16", Thread Length: 49/64", NAS1351 series screw
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 0.734 inches and 0.766 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 | .75, 3/4 |
| Material | Steel |
| Min. Tensile Strength (psi) | 170000 pounds per square inch |
| Minimum Yield Strength | 150000 pounds per square inch |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification single treatment response type 2 ams-qq-p-416 |
| Thread | 1/4-28 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Fraction | 1/4-28 |
| Thread Length | Between 0.663 inches and 0.766 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNRF |
| Thread Series Designator | UNRF |
| Thread Size | 1/4 |
| Type | Fine Thread |
| Width Across Flats | Between 0.187 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
No interchangeable or dimensionally similar parts are on record for NAS1351-4-12P. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error