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NAS1351C4-20
Socket Head Cap Screw
Description
Socket Head Screw
Specifications
| Alternate Part Number | MS16996-25 |
|---|---|
| Country of Origin | USA |
| Drive Style | Hexagon |
| Fastener Length | Between 1.234 inches and 1.281 inches |
| Hardness Rating | 80.0 rockwell b |
| 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 |
| Material | CRES |
| Material Specification | 66 federal standard 1st material response or 66 federal standard 2nd material response or 66 federal standard 3rd material response or 66 federal standard 4th material response or 66 federal standard 5th material response or astm a493 assn standard 6th material response |
| Min. Tensile Strength (psi) | 80000 pounds per square inch |
| Minimum Yield Strength | 30000 pounds per square inch |
| NIIN | 00-235-9883 |
| NSN | 5305-00-235-9883 |
| Sold In | EA |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 federal specification single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.210 inches and 1.250 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNRF |
| Thread Series Designator | UNRF |
| Thread Size | 1/4 |
| Weight | 0.0195 lb |
| Width Across Flats | Between 0.188 inches and 0.190 inches |
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for NAS1351C4-20 — functionally equivalent.
- MS16996-25 Listed alternate 28.00-28 · 0.073 in · Flat chamfer · CRES
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Catalog data updated 2026-07-05. Report a data error