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NAS1351-4H8P
Socket Head Cap Screw
Description
Socket Head Screw
Specifications
| Alternate Part Number | MS24678-20 |
|---|---|
| Country of Origin | USA |
| Drilling | Drilled Head |
| Drive Style | Hexagon |
| Fastener Length | Between 0.484 inches and 0.516 inches |
| Hardness Rating | 38.0 rockwell c and 45.0 rockwell c |
| Head Diameter | Between 0.365 inches and 0.375 inches |
| Head Height | Between 0.244 inches and 0.250 inches |
| Head Style | Flat chamfer |
| Head Type | Socket |
| Hole Configuration Style | Hexagon flats |
| Hole Diameter | 0.036 |
| Hole Quantity | 1 |
| Hole Type | Drilled |
| Industry Standards/Certification | NAS1351 |
| Internal Drive Style | Hexagon |
| Length | 1/2 in |
| Material | Steel |
| Min. Tensile Strength (psi) | 170000 pounds per square inch |
| Minimum Yield Strength | 150000 pounds per square inch |
| NIIN | 00-099-7839 |
| NSN | 5305-00-099-7839 |
| Sold In | EA |
| Specification Data | 80205-nas1351 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Cl 2 federal specification all treatment responses type 2 ams-qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.412 inches and 0.516 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNRF |
| Thread Series Designator | UNRF |
| Thread Size | 0.2500-28, 1/4 |
| Weight | 0.0105 lb |
| 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.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for NAS1351-4H8P — functionally equivalent.
- MS24678-20 Listed alternate 28.00-28 · 1/2 in · Flat chamfer · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error