Mutual Screw & Supply

#6-40 X 7/16" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | Alloy Steel Thermal Black Oxide (400 / Pkg.)

#6-40 X 7/16" Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded - Main image
$41.61 $55.48 In stock

These #6-40 x 7/16" 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: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #6-40
  • Length: 7/16"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #6-40
  • Length: 7/16"
  • Threads per inch: 40
  • 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 (5.0 / 5 · 5 reviews)

Ellie P. ★★★★★

Pulled these out for a precision jig build and the black oxide finish feels really durable, much better than the cheap zinc-plated stuff I've used before. The hex socket grabbed perfectly on the first try.

Kevin ★★★★★

The hex socket drive on these #6-40 screws grips the driver perfectly without any cam-out, and the black oxide finish looks clean against my jig parts. I've used over a hundred so far for mounting small brackets and not a single one has stripped.

Eli K. ★★★★★

I needed a bunch of small, strong screws for a jig I was building, and these black oxide ones hold tight without stripping. The threading is clean and consistent across all 400 pieces.