screws › socket head cap screws
NAS1351-3-28P
MS16998-34 Socket Head Cap Screw
Description
Socket Head Cap 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 | 0.303 inches minimum and 0.312 inches maximum |
| Head Height | 0.185 inches minimum and 0.190 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1.75 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 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,ty2,cl2 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Fraction | 10-32 |
| Thread Length | 0.875 inches minimum |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNRF |
| Width Across Flats | 0.1562 inches minimum and 0.1587 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1351N3-28 NAS 1-3/4 in · Flat chamfer · Iron
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error