Mutual Screw & Supply

M20-2.5 X 100mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded | Class 10.9 Alloy Steel Thermal Black Oxide (25 / Pkg.)

M20-2.5 X 100mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially - Main image
$89 $141.27 In stock

These M20-2.5 x 100mm 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: M20-2.5
  • Length: 100mm
  • 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 10.9
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M20-2.5
  • Length: 100mm
  • Measurement type: Metric
  • Pack quantity: 25 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 (4.6 / 5 · 5 reviews)

Avery Y. ★★★★★

I needed these for a heavy jig I'm building and the 100mm length gave me just enough thread engagement. The black oxide finish looks really clean and feels durable.

Joseph U. ★★★★★

The partially threaded design was perfect for my jig build—the smooth shank seated cleanly against the fixture plate. Torqued them to spec with a hex key and the Class 10.9 steel held up without a hint of stripping.

Aurora O. ★★★★★

The black oxide finish on these screws matches the rest of my machine tooling nicely, and the 10.9 grade gives me confidence they won't strip under heavy clamping loads. Thread engagement is smooth all the way in.