screws › socket head cap screws
NAS1351-6-28P
MS16998-77 Socket Head Cap Screw
Description
Fastener Length: 1-3/4", Thread: 3/8-24, Head Width: 5/16", Thread Length: 1-9/16", NAS1351 series screw
Specifications
| 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 | 0.550 inches minimum and 0.563 inches maximum |
| Head Height | 0.368 inches minimum and 0.375 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1 3/4, 1.75 |
| Material | Steel |
| Min. Tensile Strength (psi) | 180000 pounds per square inch |
| Minimum Yield Strength | 155000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty2 cl2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.375 |
| Thread Direction | Right-hand |
| Thread Fraction | 3/8-24 |
| Thread Length | 1.210 inches minimum and 1.563 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNF |
| Thread Size | 3/8 |
| Width Across Flats | 0.313 inches minimum and 0.316 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 NAS1351-6-28P. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error