Mutual Screw & Supply

HOLO-KROME 60078 5/16-18 X 3/4" Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 60078 5/16-18 X 3/4" Socket Cap Screws | Flat Head Hex Socket Drive - Main image
$31.15 $45.14 In stock

These 5/16-18 x 3/4" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a 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: Socket Drive
  • Thread size: 5/16-18
  • Length: 3/4"
  • 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: Socket Drive
  • Thread size: 5/16-18
  • Length: 3/4"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 100 per package
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Standard Shipping · United States: $0.00

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 (5.0 / 5 · 5 reviews)

Isabella ★★★★★

The flat head design on these sits perfectly flush in my jig, and the hex socket drive grips without any stripping issues. Managed to bolt down a whole fixture plate with the full hundred pack and every single one threaded cleanly.

Steven L. ★★★★★

The black oxide finish on these screws matched perfectly with my jig build, and the flat head sat flush without any wobble. They threaded cleanly into pre-tapped holes for a precision assembly I was working on.

Nicholas G. ★★★★★

These screws held up great on my latest jig project, the black oxide coating handled the tight fit without any galling. I was really impressed that all 100 had clean threads and consistent depth across the batch.