Mutual Screw & Supply

M20-2.5 X 120mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (25 / Pkg.)

M20-2.5 X 120mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially - Main image
$114.84 $171.4 In stock

These M20-2.5 x 120mm 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: 120mm
  • 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: M20-2.5
  • Length: 120mm
  • 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 (4.8 / 5 · 5 reviews)

Claire ★★★★★

The 12.9 alloy steel feels seriously rigid—these threaded in clean without a hint of binding on my fixture plates. Partial threads are just right for clamping thick jigs, and the black oxide is holding up well after a few weeks of shop use.

Sofia Q. ★★★★★

The black oxide finish on these screws looks great and resists wear well in my jig setup. Although they are partially threaded, the flat head sits flush and the hex drive grabs securely without stripping during install. A solid choice for heavy-duty tooling where you need exact fit and strength.

Richard ★★★★★

These bolts mated perfectly with the M20 die I was using, and the black oxide finish gives them a clean, professional look. The hex socket drive makes it easy to get good torque without stripping the head.