Mutual Screw & Supply

3/8-16 X 3" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Partially Threaded | Alloy Steel Thermal Black Oxide (50 / Pkg.)

3/8-16 X 3" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Partially - Main image
$173.62 $289.36 In stock

These 3/8-16 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: 3/8-16
  • 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: 3/8-16
  • Length: 3"
  • Threads per inch: 16
  • 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)

Violet F. ★★★★★

The black oxide finish on these screws gives them a nice grippy feel when seating them with a hex key, and the nylon pellet locks them in place without needing threadlocker. The partial threading made alignment in my tooling block a breeze, and the 50-pack is enough to cover a couple of projects.

David ★★★★★

I've used these in a few jig fixtures and the partially threaded design really helped seat things flush without extra spacers. The black oxide finish has held up fine so far, no chips or rust after a couple weeks on the bench.

Richard H. ★★★★★

Installed these on a jig I'm building and the black oxide finish looks great while resisting rust. The partial threading made alignment much easier than expected.