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NAS428-3A14
Crowned Hex Head Machine Bolt
Description
Crowned Hex Head Machine Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | 1.50 |
| Features Provided | Finished head |
| Grip Length | Between 0.031 inches and 0.062 inches |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | 0.109 |
| Head Style | Crowned hexagon |
| Head Type | Hexagon |
| Industry Standards/Certification | NAS428 |
| Length | 1 1/2, 1.500 in |
| Material | Steel |
| Material Specification | Mil-b-6812 military specification all material responses |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 00-286-1336 |
| NSN | 5306-00-286-1336 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Class 3 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.190 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.438 inches and 1.469 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 0.1900-32, 10 |
| Weight | 0.015 lb |
| Width Between Flats | 0.375 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS428-3A14. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error