bolts › machine bolts
NK5-4A
Bolt
Description
Fastener Length: 5/8", Thread: 1/4-24, Thread Length: 37/64"
Specifications
| Fastener Length | 0.578 inches minimum and 0.625 inches maximum |
|---|---|
| Features Provided | Finished head |
| Grip Length | 0.046 inches minimum and 0.078 inches maximum |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Height | 0.172 inches minimum and 0.204 inches maximum |
| Head Style | Hexagon Head |
| Length | 5/8 |
| Locking Feature | Pellet threads |
| Material | Steel |
| Material Specification | Mil-s-5626 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or mil-s-6050 mil spec 3rd material response or ggams-6300 mil spec 4th material response |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty2,cl3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.500 inches minimum and 0.579 inches maximum |
| Thread Qty | 24 |
| Thread Qty Per Inch (tpi) | 24 |
| Thread Series Designator | UNS |
| Thread Size | 1/4 |
| Width Between Flats | 0.490 inches minimum and 0.502 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NK5-4
- NK5-4A
Cross-reference
No interchangeable or dimensionally similar parts are on record for NK5-4A. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error