bolts › machine bolts
NAS428-4-12
Machine Bolt
Description
Fastener Length: 1-5/16", Thread: 1/4-28, Thread Length: 1-7/32"
Specifications
| Fastener Length | Between 1.250 inches and 1.313 inches |
|---|---|
| Features Provided | Finished head |
| Grip Length | Between 0.062 inches and 0.301 inches |
| Hardness Rating | 26.0 rockwell c and 32.0 rockwell c |
| Head Height | 0.141 |
| Head Style | Crowned hexagon |
| Material | Steel |
| Minimum Yield Strength | 125000 pounds per square inch |
| Specification Data | 80205-nas428 professional/industrial association standard |
| Surface Treatment | Cadmium |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.188 inches and 1.219 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNF |
| Thread Series Designator | Unf (fine thread) |
| Thread Size | 1/4 |
| Width Between Flats | 0.438 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS428-4-4
- NAS428-4-12
- NAS428-4-16
- NAS428-4-46
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS428-4-12. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error