screws › socket head cap screws
NAS1635-04-12
Socket Head Cap Screw
Description
Fastener Length: 3/4", Thread: 4-40, Thread Length: 3/4
Specifications
| Fastener Length | 0.720 inches minimum and 0.750 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 |
| Length | 3/4 |
| Material | CRES |
| Screw Material | Steel corrosion resisting |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Mil-f-14072 e300 mil spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.670 inches minimum and 0.750 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| 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.
- MS21090-0416 MS #4-40 · 3/4 in · Pan Head · Steel
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Catalog data updated 2026-07-05. Report a data error