Mutual Screw & Supply

M20-2.5 X 55mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class 8.8 Alloy Steel Thermal Black Oxide (25 / Pkg.)

M20-2.5 X 55mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class - Main image
$45.75 $66.3 In stock

These M20-2.5 x 55mm 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
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M20-2.5
  • Length: 55mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 8.8
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M20-2.5
  • Length: 55mm
  • Measurement type: Metric
  • Pack quantity: 25 per package
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Express Shipping · United States: $3.99

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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)

William H. ★★★★★

The black oxide finish on these screws is holding up really well after tightening them into my fixture. They fit the M20 die perfectly and the hex socket didn’t strip at all during installation.

Emily Q. ★★★★★

Installed these on a jig I'm building and the fully threaded grip held tight through repeated adjustments. The thermal black oxide finish is a nice touch—no shiny reflections under work lights.

Matthew ★★★★★

Worked perfectly for securing a heavy-duty jig on my press—the hex socket drive made installation effortless. The black oxide finish feels durable and hasn't shown any wear after repeated use.