screws › socket head cap screws
NAS1635-02-20
Socket Head Cap Screw
Description
Fastener Length: 1-1/4", Thread: 2-56, Thread Length: 1-1/4", NAS1635 series screw
Specifications
| Fastener Length | 1.250 |
|---|---|
| Head Diameter | Between 0.155 inches and 0.167 inches |
| Head Height | Between 0.053 inches and 0.062 inches |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/4 |
| Material | Steel |
| Screw Material | Steel comp 303 |
| Screw Material Specification | Mil-s-7720 military specification single material response |
| Screw Surface Treatment | Passivate |
| Thread Class | 2a |
| Thread Diameter | 0.086 |
| Thread Direction | Right-hand |
| Thread Length | 1.250 |
| Thread Qty | 56 |
| Thread Qty Per Inch (tpi) | 56 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 2 |
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 NAS1635-02-20. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error