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MS24678-20
1/2 Inch Length MS24678 Drilled Socket Head Machine Screw
Description
Fastener Length: 1/2", Hole Diameter: 3/64", Thread: 1/4-28, Head Width: 3/16", Thread Length: 7/16
Specifications
| Alternate Part Number | NAS1351-4H8P |
|---|---|
| Country of Origin | USA |
| Drilling | Drilled Head |
| Fastener Length | 0.500 |
| Finish | Plain |
| Hardness Rating | 36.0 rockwell c minimum and 43.0 rockwell c maximum |
| Head Diameter | 0.365 inches minimum and 0.375 inches maximum |
| Head Height | 0.244 inches minimum and 0.250 inches maximum |
| Head Style | Flat chamfer |
| Head Type | Socket |
| Hole Configuration Style | Round internal hexagon |
| Hole Diameter | 0.050 |
| Hole Quantity | 6 |
| Hole Type | Drilled |
| Industry Standards/Certification | MS24678 |
| Internal Drive Style | Hexagon |
| Length | 1/2 |
| Material | Steel |
| Material Specification | 66 fed std single material response |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Minimum Yield Strength | 130000 pounds per square inch |
| Size | 1/4-28 |
| Sold In | Per Package |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2 cl 3 fed spec all treatment responses |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.445 inches minimum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 0.2500-28, 1/4 |
| Thread Type | N.F. - Fine |
| Weight | .005 lb |
| Width Across Flats | 0.188 inches minimum and 0.190 inches maximum |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS24678-20 — functionally equivalent.
- NAS1351-4H8P Listed alternate 28.00-28 · 1/2 in · Flat chamfer · Steel
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Catalog data updated 2026-07-05. Report a data error