Mutual Screw & Supply

1/2-13 X 3-1/2" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Partially Threaded | Alloy Steel Thermal Black Oxide (25 / Pkg.)

1/2-13 X 3-1/2" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Partially - Main image
$52.57 $75.1 In stock

These 1/2-13 x 3-1/2" 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
  • Drive: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: 1/2-13
  • Length: 3-1/2"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: 1/2-13
  • Length: 3-1/2"
  • Threads per inch: 13
  • Measurement type: Inch
  • Pack quantity: 25 per package
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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 (4.4 / 5 · 5 reviews)

Sophia ★★★★★

Finally, a socket cap screw that actually bites and holds—the alloy steel feels rock-solid under torque, and the black oxide finish makes them look as serious as they perform. I used them to rebuild a jig at the shop, and the partial threading let me get a clean grip without stripping the threads.

Aurora ★★★★★

These hex screws fit perfectly into my jig's tapped holes, and the black oxide finish hasn't shown any wear after a few days of adjustments. The partial threading gave me just the right grip for a tight assembly.

Benjamin Q. ★★★★★

The nylon pellet is exactly what I needed to keep these from backing out on the jig—seated them with a hex key and they haven't budged. The black oxide finish looks clean on the machine, and the partial thread gives plenty of grip for the depth I'm working with.