Mutual Screw & Supply

M5-0.8 X 85mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (200 / Pkg.)

M5-0.8 X 85mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class - Main image
$39.24 $54.5 In stock

These M5-0.8 x 85mm 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: M5-0.8
  • Length: 85mm
  • 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: M5-0.8
  • Length: 85mm
  • Measurement type: Metric
  • Pack quantity: 200 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)

Scarlett J. ★★★★★

The 12.9 grade strength is no joke — these bolts torqued down smoothly into my fixture without stripping, and the black oxide finish gives them a nice, uniform grip in the wrench. At 85mm with partial threading, they’re perfect for clamping thicker plates together.

Zoe ★★★★★

I needed some extra length for a jig build and these 85mm screws fit the bill perfectly. The hex drive made installation smooth, and the partially threaded design felt secure in the assembly.

Madison ★★★★★

The black oxide finish gives these a nice, uniform grip in my wrenches, and the 85mm length handles deep jig fixtures without any wobble. Threaded portion cuts cleanly into aluminum and the 12.9 hardness makes me trust them on load-bearing joints.