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NAS1351C4H28
Socket Head Screw
Description
Fastener Length: 1-3/4", Hole Diameter: 3/64", Thread: 1/4-28, Head Width: 3/16", Thread Length: 1-"
Specifications
| Fastener Length | 1.710 inches minimum and 1.750 inches maximum |
|---|---|
| Hardness Rating | 80.0 rockwell b minimum |
| 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 |
| Hole Configuration Style | Round internal hexagon |
| Hole Diameter | 0.047 |
| Hole Quantity | 6 |
| Hole Type | Drilled |
| Internal Drive Style | Hexagon |
| Length | 1 3/4 |
| Material | CRES |
| Material Specification | 66 fed std 1st material response or 66 fed std 2nd material response or 66 fed std 3rd material response or 66 fed std 4th material response or 66 fed std 5th material response or astm a493 assn std 6th material response |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Minimum Yield Strength | 30000 pounds per square inch |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| 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 Designator | UNJF |
| 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.
- 655-590-9122 Commercial 1/4-28 · 0.073 in · Flat chamfer · Iron
- MS24673-13 MS 1/4-28 · 0.073 in · Flat chamfer · CRES
- MS24673-14 MS 1/4-28 · 0.073 in · Flat chamfer · CRES
- NAS1351-4H24P NAS 1/4-28 · 0.073 in · Flat chamfer · Steel
- NAS1351C4H24 NAS 1/4-28 · 0.073 in · Flat chamfer · CRES
- NAS1351N4H20 NAS 1/4-28 · 0.073 in · Flat chamfer · Iron
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Catalog data updated 2026-07-05. Report a data error