screws › socket head cap screws
NAS1351N08-20
Socket Head Cap Screw
Description
Fastener Length: 1-1/4", Thread: 8-36, Thread Length: 7/8
Specifications
| Fastener Length | 1.210 inches minimum and 1.250 inches maximum |
|---|---|
| Hardness Rating | 33.0 rockwell c minimum and 42.0 rockwell c maximum |
| Head Diameter | 0.262 inches minimum and 0.270 inches maximum |
| Head Height | 0.159 inches minimum and 0.164 inches maximum |
| Head Style | Flat chamfer |
| Length | 1 1/4 |
| Material | Iron |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Screw Material | Iron alloy 660 |
| Screw Material Specification | Ams5731 assn std single material response and ams5737 assn std single material response |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Specification Data | 80205-nas1531 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.164 |
| Thread Direction | Right-hand |
| Thread Length | 0.875 inches minimum |
| Thread Qty | 36 |
| Thread Qty Per Inch (tpi) | 36 |
| Thread Series Designator | UNRF |
| Thread Size | 8 |
| Width Across Flats | 0.1406 inches minimum and 0.1426 inches maximum |
| Width Between Flats | 0.1406 inches minimum and 0.1426 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1351N08-6
- NAS1351N08-8
- NAS1351N08-10
- NAS1351N08-12
- NAS1351N08-14
- NAS1351N08-20
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.
- NAS1351-08-20 NAS #8-36 · 0.073 in · Flat chamfer · Steel
- NAS1351C08-24 NAS #8-36 · 0.073 in · Flat chamfer · CRES
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error