screws › socket head cap screws
NAS1635-04-8
Socket Head Cap Screw
Description
Fastener Length: 1/2", Thread: 4-40, Thread Length: 1/2", NAS1635 series screw
Specifications
| Fastener Length | Between 0.470 inches and 0.500 inches |
|---|---|
| Head Diameter | Between 0.205 inches and 0.219 inches |
| Head Height | Between 0.070 inches and 0.080 inches |
| Head Style | Pan Head |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/2 |
| Material | CRES |
| Screw Material | Stainless steel |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Mil-f-14072 finish e300 military specification single treatment response |
| Specification Data | 80205-nas1635 professional/industrial association standard |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.420 inches and 0.500 inches |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1635-04LE8 NAS #4-40 · 1/2 in · Pan Head · CRES
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Catalog data updated 2026-07-05. Report a data error