Mutual Screw & Supply

1/2-20 X 3" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Partially Threaded | Alloy Steel Thermal Black Oxide (50 / Pkg.)

1/2-20 X 3" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Partially - Main image
$90.12 $140.82 In stock

These 1/2-20 x 3" 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: 1/2-20
  • Length: 3"
  • 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: 1/2-20
  • Length: 3"
  • Threads per inch: 20
  • Measurement type: Inch
  • Pack quantity: 50 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 (4.6 / 5 · 5 reviews)

Ella ★★★★★

The black oxide finish on these is surprisingly even and durable, and the nylon pellet in the threads held my fixture snug even after a few tighten/loosen cycles. For a 50-pack of this size and grade, the price felt fair. I've got plenty left over for the next tooling project.

Claire W. ★★★★★

Had to swap out some worn fasteners on a jig at work, and these threaded in smooth as butter with the hex socket drive. The thermal black oxide finish looks sharp and feels durable, and the partial threading gave my assembly just the right grip. These are going to be my go-to for tooling from now on

Eva ★★★★★

The nylon pellet in the threads is a nice touch for keeping them locked in place on my jig setup, and the partial threading grabbed just right. Fifty of them in the pack means I won’t be running out any time soon.