Mutual Screw & Supply

5/16-18 X 1-1/4" Socket Cap Screws | Hex Socket Drive | Fully Threaded | Silicon Bronze (100 / Pkg.)

5/16-18 X 1-1/4" Socket Cap Screws | Hex Socket Drive | Fully Threaded | - Main image
$216.77 $309.67 In stock

These 5/16-18 x 1-1/4" socket cap screws are manufactured from Silicon Bronze, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Silicon Bronze
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 1-1/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Silicon Bronze
  • Finish: Plain
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/16-18
  • Length: 1-1/4"
  • Threads per inch: 18
  • 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 (4.8 / 5 · 5 reviews)

Amelia S. ★★★★★

Used a handful for a jig I was building, and the hex socket drive made installation quick with no stripping. The silicon bronze has a nice color that stands out from standard steel, and the full thread gives a solid grip.

Olivia ★★★★★

The silicon bronze finish is exactly what I wanted for a marine-adjacent jig build—no corrosion worries after a few salty days in the shop. Each of the hundred screws threads cleanly into tapped holes without any binding, and the fully threaded length gives me plenty of grip in tight spots.

Emma Y. ★★★★★

I used these for a custom jig build and the hex socket drive made installation much smoother than a slotted head would have. The fully threaded length gripped perfectly in the silicon bronze.