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MS18063-1
Military Standard Setscrew
Description
Fastener Length: 1/8", Thread: 4-40, Head Width: 3/64", Thread Length: 1/8
Specifications
| Drive Style | Hexagon |
|---|---|
| Fastener Length | 0.125 |
| Hardness Rating | 33.0 rockwell c and 40.0 rockwell c |
| Head Style | Headless (setscrew) |
| Internal Drive Style | Hexagon |
| Length | 1/8 |
| Locking Feature | Patch threads or pellet threads or strip threads |
| Material | Steel |
| Material Specification | 66 federal standard all material responses |
| Nondefinitive Specification/Std Data | 1 type and 4 style |
| Point Style | Cup |
| Surface Treatment | Cadmium and chromate and chromate |
| Surface Treatment Specification | Class 3 federal specification single treatment response type 2 qq-p-416 |
| Thread Class | 3a |
| Thread Diameter | 0.112 |
| Thread Direction | Right-hand |
| Thread Length | 0.125 |
| Thread Qty | 40 |
| Thread Qty Per Inch (tpi) | 40 |
| Thread Series | UNC |
| Thread Series Designator | Unc (coarse thread) |
| Thread Size | 4 |
| Width Across Flats | Between 0.050 inches and 0.051 inches |
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.
- AN565B4H2 AN #4-40 · 1/8 in · Headless (setscrew) · Steel
- AN565BC4H2 AN #4-40 · 1/8 in · Headless (setscrew) · Steel
- MS51965-8 MS #4-40 · 1/8 in · Headless (setscrew) · Steel
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Catalog data updated 2026-07-05. Report a data error