screws › socket head cap screws
NAS1351-4-48
Socket Head Cap Screw
Description
Fastener Length: 2-63/64", Thread: 1/4-28, Head Width: 3/16", Thread Length: 1"
Specifications
| Color | Black |
|---|---|
| Fastener Length | 2.969 inches minimum and 3.031 inches maximum |
| Hardness Rating | 38.0 rockwell c minimum and 45.0 rockwell c maximum |
| Head Diameter | 0.365 inches minimum and 0.375 inches maximum |
| Head Height | 0.244 inches minimum and 0.250 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 2 63/64 |
| Material | Steel |
| Min. Tensile Strength (psi) | 170000 pounds per square inch |
| Minimum Yield Strength | 150000 pounds per square inch |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Oxide |
| Surface Treatment Specification | Mil-c-13924,cl 1 mil spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 1.000 inches minimum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNRF |
| Thread Size | 1/4 |
| Width Across Flats | 0.188 inches minimum and 0.190 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.
- NAS1351-4-36P NAS 1/4-28 · 0.086 in · Flat chamfer · Steel
- NAS1351C4-32 NAS 1/4-28 · 0.086 in · Flat chamfer · Steel
- NAS1351C4-36 NAS 1/4-28 · 0.086 in · Flat chamfer · CRES
- NAS1351C4-40 NAS 1/4-28 · 0.086 in · Flat chamfer · CRES
- NAS1351N4LL36 NAS 1/4-28 · 0.086 in · Flat chamfer · Iron
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Catalog data updated 2026-07-05. Report a data error