screws › machine screws
NAS222-9
Machine Screw
Description
Fastener Length: 5/8", Thread: 1/4-28, Thread Length: 37/64
Specifications
| Fastener Length | 0.579 inches minimum and 0.626 inches maximum |
|---|---|
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Diameter | 0.464 inches minimum and 0.493 inches maximum |
| Head Height | 0.133 inches minimum and 0.150 inches maximum |
| Head Style | Round Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 5/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Screw Material | Steel comp 8630 |
| Screw Material Specification | Mil-s-6050 mil spec single material response or an-s-9 mil std single material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.431 inches minimum and 0.579 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
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 NAS222-9. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error