Mutual Screw & Supply

#4-40 X 1/2" Socket Cap Screws | Button Head Hex Socket Drive | Nylon Pellet | Fully Threaded | Alloy Steel Thermal Black Oxide (100 / Pkg.)

#4-40 X 1/2" Socket Cap Screws | Button Head Hex Socket Drive | Nylon Pellet | - Main image
$67.47 $107.09 In stock

These #4-40 x 1/2" 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: #4-40
  • Length: 1/2"
  • 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: #4-40
  • Length: 1/2"
  • Threads per inch: 40
  • 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)

Leo ★★★★★

The black oxide finish on these holds up nicely under repeated clamping in my drill jig—no rust after a few weeks of shop use. The hex socket drives cleanly, and every screw in the pack threads into my 4-40 taps without binding.

James ★★★★★

These are perfect for my mini jig build—the hex drive makes installation easy, and the thermal black oxide finish looks clean on the frame. The nylon pellet is a nice touch for a firm hold.

Michael ★★★★★

The nylon pellet is surprisingly effective at locking these little screws in place on my jig setup. They tighten down smoothly with a hex key and the black oxide finish looks clean and professional.