screws › machine screws
NAS1635-04-20
Machine Screw
Description
Machine Screw
Specifications
| Fastener Length | 1.190 inches minimum and 1.250 inches maximum |
|---|---|
| Head Diameter | 0.205 inches minimum and 0.219 inches maximum |
| Head Height | 0.070 inches minimum and 0.080 inches maximum |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Screw Material | Steel corrosion resisting |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Mil-f-14072 e-300 mil spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 1.250 inches maximum |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1635-04-3
- NAS1635-04-5
- NAS1635-04-7
- NAS1635-04-20
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1635-04-20. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error