bolts › machine bolts
NAS501-4-17
Bolt
Description
Fastener Length: 1-15/16", Thread: 1/4-28, Thread Length: 1/2"
Specifications
| Distance From Head Largest Bearing Surface To Shank Hole Center | 1.734 inches minimum first hole and 1.766 inches maximum first hole |
|---|---|
| Fastener Length | 1.890 inches minimum and 1.937 inches maximum |
| Features Provided | Finished head |
| Grip Length | 1.422 inches minimum and 1.454 inches maximum |
| Head Height | 0.140 inches minimum and 0.172 inches maximum |
| Head Style | Hexagon Head |
| Length | 1 15/16 |
| Material | CRES |
| Material Specification | Ams 5645 assn std 1st material response or ams 5646 assn std 2nd material response |
| Shank Unthreaded Hole Diameter | 0.076 inches nominal first hole |
| Specification Data | 80205-nas501 professional/industrial association standard |
| Surface Treatment | Passivate |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.436 inches minimum and 0.515 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Between Flats | 0.428 inches minimum and 0.440 inches maximum |
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 NAS501-4-17. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error