Mutual Screw & Supply

1/4-20 X 7/8" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | Alloy Steel Thermal Black Oxide (400 / Pkg.)

1/4-20 X 7/8" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | - Main image
$34.6 $57.66 In stock

These 1/4-20 x 7/8" 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: Fully Threaded
  • Thread size: 1/4-20
  • Length: 7/8"
  • 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: Fully Threaded
  • Thread size: 1/4-20
  • Length: 7/8"
  • Threads per inch: 20
  • Measurement type: Inch
  • Pack quantity: 400 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 (4.6 / 5 · 5 reviews)

Claire A. ★★★★★

Used these to build a custom jig for my drill press and the black oxide finish really holds up against metal shavings without rusting. The flat head sits perfectly flush, which is exactly what I needed for a tight assembly.

James G. ★★★★★

I needed a bulk pack for jig assembly and the black oxide finish on these gives them a nice, uniform look that resists rust better than plain steel. The hex drive bites cleanly without stripping, even when I snug them down into tapped holes.

Grace P. ★★★★★

These flat head screws sat flush perfectly in the counterbores I drilled for a small press fixture. The black oxide coating is consistent and clean, no flaking off during installation. Good value for the quantity.