screws › socket head cap screws
NAS1351N4LE20
Socket Head Cap Screw
Description
Fastener Length: 1-1/4", Thread: 1/4-28, Head Width: 3/16", NAS1351 series screw
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 1.210 inches and 1.250 inches |
| 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 | 1 1/4 |
| Locking Feature | Patch threads or pellet threads or strip threads |
| Material | Iron |
| Material Specification | Ams 5731 assn standard single material response fastener or ams 5737 assn standard single material response fastener |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response fastener |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 1.000 |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNRF |
| Thread Series Designator | UNRF |
| Thread Size | 1/4 |
| 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.
- NAS1351N4LE10
- NAS1351N4LE20
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.
- NAS1351-4-18P NAS 1/4-28 · 0.073 in · Flat chamfer · Steel
- NAS1351-4-20P NAS 1/4-28 · 0.073 in · Flat chamfer · Steel
- NAS1351-4LB24P NAS 1/4-28 · 0.073 in · Flat chamfer · Plastic
- NAS1351-4LL28P NAS 1/4-28 · 0.073 in · Flat chamfer · Plastic
- NAS1351C4-18 NAS 1/4-28 · 0.073 in · Flat chamfer · CRES
- NAS1351C4-24P NAS 1/4-28 · 0.073 in · Flat chamfer · Steel
- NAS1351C4-28 NAS 1/4-28 · 0.073 in · Flat chamfer · CRES
- NAS1351C4LL18 NAS 1/4-28 · 0.073 in · Flat chamfer · Steel
- NAS1351C4LL6 NAS 1/4-28 · 0.073 in · Flat chamfer · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error