Mutual Screw & Supply

5/16-18 X 1/2" Socket Cap Screws | Button Head Hex Socket Drive | Nylon Pellet | Fully Threaded | Alloy Steel Thermal Black Oxide (100 / Pkg.)

5/16-18 X 1/2" Socket Cap Screws | Button Head Hex Socket Drive | Nylon Pellet - Main image
$277.16 $384.94 In stock

These 5/16-18 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: 5/16-18
  • 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: 5/16-18
  • Length: 1/2"
  • Threads per inch: 18
  • Measurement type: Inch
  • Pack quantity: 100 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 (4.8 / 5 · 5 reviews)

Mia ★★★★★

The nylon pellet keeps these from backing out during vibration, which is exactly what I needed for a jig setup. They drive smoothly with a hex key and the black oxide finish looks clean.

Matthew R. ★★★★★

The hex socket drive grabs perfectly, making installation into jigs and fixtures a breeze. I used these for a small machining setup and they held tight without any stripping. Really solid hardware for the price.

Brian ★★★★★

The black oxide finish on these button heads looks sharp and held up fine during assembly on my jig. Pellet locking them in place is a nice touch—didn't expect that at this price, and the 100-count pack is plenty for a few projects.