screws › socket head cap screws
NAS1351N5-20
Socket Head Cap Screw
Description
Fastener Length: 1-1/4", Thread: 1/4-24, Head Width: 1/4", Thread Length: 1-1/8", NAS1351 series screw
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | Between 1.210 inches and 1.250 inches |
| Head Diameter | Between 0.457 inches and 0.469 inches |
| Head Height | Between 0.306 inches and 0.312 inches |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1 1/4 |
| Material | Iron |
| Material Specification | Ams 5731 assn standard single material response or ams 5737 assn standard single material response |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.312 |
| Thread Direction | Right-hand |
| Thread Length | 1.125 |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series | UNRF |
| Thread Series Designator | UNRF |
| Thread Size | 1/4 |
| Width Across Flats | Between 0.250 inches and 0.253 inches |
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.
- MS16998-62 MS 1/4-24 · 0.073 in · Flat chamfer · Steel
- MS21262-80 MS 1/4-24 · 0.073 in · Flat chamfer · Plastic
- NAS1351-5-20P NAS 1/4-24 · 0.073 in · Flat chamfer · Steel
- NAS1351C5-20 NAS 1/4-24 · 0.073 in · Flat chamfer · Steel
- NAS1351C5-28 NAS 1/4-24 · 0.073 in · Flat chamfer · CRES
- NAS1351N5-24 NAS 1/4-24 · 0.073 in · Flat chamfer · Iron
- NAS1351N5-28 NAS 1/4-24 · 0.073 in · Flat chamfer · Iron
- NAS1351N5-32 NAS 1/4-24 · 0.073 in · Flat chamfer · Iron
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Catalog data updated 2026-07-05. Report a data error