screws › machine screws
509441-46
Screw
Description
Fastener Length: 3/4", Thread: 1/4-28, Head Width: 3/16", Thread Length: 11/16"
Specifications
| Fastener Length | 0.750 |
|---|---|
| Hardness Rating | 36.0 rockwell c minimum and 43.0 rockwell c maximum |
| Head Diameter | 0.375 inches maximum |
| Head Height | 0.250 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 3/4 |
| Material | Steel |
| Material Specification | Mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response |
| Minimum Yield Strength | 130000 pounds per square inch |
| Surface Finish | 125.0 microinches |
| Test Data Document | 81349-mili6868 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.). |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.688 inches minimum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
| Width Across Flats | 0.187 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- 509441-46
- 509441-1216
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.
- MS21262-44 MS 1/4-28 · 3/4 in · Flat chamfer · Steel
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Catalog data updated 2026-07-05. Report a data error