Mutual Screw & Supply

M24-3 X 140mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (5 / Pkg.)

M24-3 X 140mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially - Main image
$79.9 $124.84 In stock

These M24-3 x 140mm socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Head style: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M24-3
  • Length: 140mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 12.9
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M24-3
  • Length: 140mm
  • Measurement type: Metric
  • Pack quantity: 5 per package
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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Leo P. ★★★★★

The black oxide finish looks properly done—no uneven patches or tool marks, and the hex socket drive seated perfectly with my torque wrench. These M24-3s feel solid enough for my jig setup, and the 140mm length was exactly what I measured for.

Ella D. ★★★★★

The partial threading made all the difference for my jig build; I needed precise clamping without the shoulders bottoming out. Class 12.9 steel is noticeably more rigid than the cheaper screws I've used before.

Victoria K. ★★★★★

The thermal black oxide finish on these M24 screws got them through some heavy jig work without any corrosion or seizing issues. The hex socket drive gave me a solid grip during installation even in tight spots. The partial threading made alignment into my precision fixture much easier than a fully