Mutual Screw & Supply

M8-1.25 X 170mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (50 / Pkg.)

M8-1.25 X 170mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | - Main image
$94.66 $139.21 In stock

These M8-1.25 x 170mm 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: Partially Threaded
  • Thread size: M8-1.25
  • Length: 170mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 12.9
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M8-1.25
  • Length: 170mm
  • Measurement type: Metric
  • Pack quantity: 50 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)

Joshua ★★★★★

I needed a bolt that would hold up under heavy clamping loads, and these 12.9 alloy steel screws haven't budged a millimeter. The black oxide finish is a nice touch too, seems to resist shop grime better than plain steel.

Violet ★★★★★

The 170mm length was spot on for the jig assembly I’m building, and the black oxide finish actually looks cleaner than I expected once torqued down. Threads caught smoothly and the 12.9 hardness gives me confidence these won’t strip under load.

Harper X. ★★★★★

Installed these on a heavy-duty workbench clamp and the 12.9 alloy steel held up perfectly under torque. The partially threaded design made alignment easy through thicker sections.