screws › setscrews
AN565B4H2
Aeronautical Standard Setscrew
Description
Fastener Length: 1/8", Thread: 4-40, Head Width: 3/64", Thread Length: 1/8"
Specifications
| Fastener Length | 0.125 |
|---|---|
| Hardness Rating | 45.0 rockwell c minimum and 53.0 rockwell c maximum |
| Head Style | Headless (setscrew) |
| Internal Drive Style | Hexagon |
| Length | 1/8 |
| Material | Steel |
| Material Specification | 66 fed std all material responses |
| Point Style | Cone |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416 type 2,class 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.125 inches maximum |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series Designator | UNC |
| Thread Size | 4 |
| Width Across Flats | 0.050 inches minimum and 0.051 inches maximum |
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.
- MS18063-1 MS #4-40 · 1/8 in · Headless (setscrew) · Steel
- MS51965-8 MS #4-40 · 1/8 in · Headless (setscrew) · Steel
- AN565BC4H2 AN #4-40 · 1/8 in · Headless (setscrew) · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error