Mutual Screw & Supply

#5-40 X 3/16" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | Alloy Steel Thermal Black Oxide (300 / Pkg.)

#5-40 X 3/16" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | - Main image
$31.23 $45.93 In stock

These #5-40 x 3/16" 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: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: #5-40
  • Length: 3/16"
  • 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: #5-40
  • Length: 3/16"
  • Threads per inch: 40
  • Measurement type: Inch
  • Pack quantity: 300 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)

Riley G. ★★★★★

Used a handful of these to tighten up the jig on my drill press and the hex socket drive grabbed perfectly every time. The alloy steel feels solid, no stripping or rounding off even when torqued down.

Harper R. ★★★★★

The black oxide finish on these #5-40 screws looks great and seems like it’ll hold up well in my jig setup. They thread cleanly into tapped holes without any binding, which is exactly what I needed for precision work.

Penelope J. ★★★★★

These little flat heads seat perfectly flush in my jig plate, and the hex drive makes them much easier to tighten than a Phillips. The whole bag of 300 feels solid and consistent across every screw I’ve checked.