Mutual Screw & Supply

5/8-11 X 8" Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded | Alloy Steel Thermal Black Oxide (10 / Pkg.)

5/8-11 X 8" Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded - Main image
$80.89 $115.55 In stock

These 5/8-11 x 8" 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: 5/8-11
  • Length: 8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: 5/8-11
  • Length: 8"
  • Threads per inch: 11
  • Measurement type: Inch
  • Pack quantity: 10 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 (4.8 / 5 · 5 reviews)

Emily B. ★★★★★

I needed heavy-duty screws for a machine jig, and these 8-inch alloy steel ones handled the torque without stripping. The black oxide finish seems durable and hasn't shown any wear yet.

Jason ★★★★★

Installed these in a jig I’m building and the hex socket drive made tightening them in tight spots easy. The partially threaded design held securely without any slipping.

Mia ★★★★★

The black oxide finish on these screws matched perfectly with my tooling setup, and the hex socket drive made installation straightforward even in tight spaces. They feel strong and substantial, exactly what I needed for a heavy-duty fixture.