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MS51975-9
Hexagon Socket Shoulder Screw
Description
Fastener Length: 1-3/64", Thread: 1/4-20, Head Width: 5/32", Thread Length: 27/64"
Specifications
| Fastener Length | 1.048 inches minimum and 1.058 inches maximum |
|---|---|
| Finish | Cadmium ll |
| Hardness Rating | 32.0 rockwell c minimum and 43.0 rockwell c maximum |
| Head Diameter | 0.419 inches minimum and 0.437 inches maximum |
| Head Height | 0.209 inches minimum and 0.219 inches maximum |
| Head Style | Flat chamfer |
| Internal Drive Style | Hexagon |
| Length | 1 3/64 |
| Material | Steel |
| Min. Tensile Strength (psi) | 140000 pounds per square inch |
| Shoulder Diameter | 0.308 inches minimum first shoulder and 0.310 inches maximum first shoulder, 5/16 |
| Shoulder Length | 0.620 inches minimum first shoulder and 0.630 inches maximum first shoulder, 5/8 |
| Shoulder Shape | Round first shoulder |
| Size | 1/4-20 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2,cl 3 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.418 inches minimum and 0.438 inches maximum, 7/16 |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNC |
| Thread Size | 1/4 |
| Thread Type | N.C. - Coarse |
| Width Across Flats | 0.156 |
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.
- MS51975-10 MS 1/4-20 · 0.073 in · Flat chamfer · Steel
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Catalog data updated 2026-07-05. Report a data error