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NAS428-4A11
Crowned Hex Head Machine Bolt
Description
Crowned Hex Head Machine Bolt
Specifications
| Country of Origin | USA |
|---|---|
| Fastener Length | 1.125 |
| Grip Length | 0.031 inches minimum and 0.062 inches maximum |
| Head Height | 0.141 |
| Head Style | Crowned hexagon |
| Head Type | Hexagon |
| Industry Standards/Certification | NAS428 |
| Length | 1 1/8, 1.125 in |
| Material | Steel |
| Material Specification | Mil-s-6050 mil spec 1st material response or mil-s-6098 mil spec 2nd material response or mil-s-6758 mil spec 3rd material response or ams6300 assn std 4th material response or mil-s-5626 mil spec 5th material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| NIIN | 01-482-1625 |
| NSN | 5306-01-482-1625 |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416, ty ii, cl 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 1.063 inches minimum and 1.094 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Size | 0.2500-28, 1/4 |
| Weight | 0.02 lb |
| Width Between Flats | 0.438 inches minimum |
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 NAS428-4A11. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error