Mutual Screw & Supply

HOLO-KROME 60082 5/16-18 X 1-1/4" Socket Cap Screws | Flat Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 60082 5/16-18 X 1-1/4" Socket Cap Screws | Flat Head Hex Socket - Main image
$37.12 $50.16 In stock

These 5/16-18 x 1-1/4" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Head style: Flat Head
  • Drive: Socket Drive
  • Thread size: 5/16-18
  • Length: 1-1/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Socket Drive
  • 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)

Emma E. ★★★★★

These screws held perfectly when I used them to assemble a small machine jig—the black oxide finish also seems to resist rust quite well. Came in a neat 100-pack, and the socket drive made tightening them quick without stripping. Exactly what I needed for the job.

Lucy A. ★★★★★

I needed some reliable fasteners for a jig I’m building, and these flat head screws fit perfectly in the countersunk holes. The hex socket drive made installation quick with no stripping, and they feel solid.

William ★★★★★

Finally found flat head screws that actually sit flush without needing to countersink deeper holes. The black oxide finish seems rugged enough for my jig setup.