screws › socket head cap screws
NAS1351N7-20
Socket Head Cap Screw
Description
Fastener Length: 1-1/4", Thread: 7/16-20, Head Width: 3/8", Thread Length: 1-1/4
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 1.190 inches and 1.250 inches |
| Hardness Rating | 33.0 rockwell c and 42.0 rockwell c |
| Head Diameter | Between 0.642 inches and 0.656 inches |
| Head Height | Between 0.430 inches and 0.437 inches |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1 1/4 |
| Material | Iron |
| Material Specification | Ams5731 assn standard single material response and ams5737 assn standard single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1531 professional/industrial association standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.438 |
| Thread Direction | Right-hand |
| Thread Length | 1.250 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series | UNRF |
| Thread Series Designator | UNRF |
| Thread Size | 7/16 |
| Width Across Flats | Between 0.375 inches and 0.379 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1351N7-20
- NAS1351N7-32
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.
- NAS1351-7-20P NAS 7/16-20 · 0.073 in · Flat chamfer · Steel
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Catalog data updated 2026-07-05. Report a data error