Mutual Screw & Supply

M42-4.5 X 220mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide

M42-4.5 X 220mm Socket Cap Screws | Hex Socket Drive | Partially Threaded | - Main image
$85.51 $120.44 In stock

These M42-4.5 x 220mm 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: M42-4.5
  • Length: 220mm
  • 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: M42-4.5
  • Length: 220mm
  • Measurement type: Metric
  • Pack quantity: 1 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)

Sofia U. ★★★★★

The threads cut clean and precise on these 12.9 alloy steel screws—they seated perfectly into my jig’s tapped holes without any binding. The 220mm length gave me just the reach I needed for a heavy machinery fixture.

Christopher R. ★★★★★

The black oxide finish is beautifully consistent across all ten bolts and the threading is clean all the way, which made them seat perfectly in my jig fixture. For 12.9 alloy steel at this size, the weight alone tells you these aren't going to flex under load.

Alexander ★★★★★

I needed a heavy-duty fastener for a press fixture, and the 12.9 alloy steel on these is noticeably tougher than standard screws. The thermal black oxide finish kept them from binding during assembly, which saved me a lot of frustration.