Mutual Screw & Supply

HOLO-KROME 72130 5/16-18 X 1-1/4" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 72130 5/16-18 X 1-1/4" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$26.1 $42.1 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
  • 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
  • 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)

Samuel ★★★★★

The black oxide finish on these socket caps looks great and seems like it will resist rust well in my shop jigs. They drive in cleanly with a hex key and hold firmly without stripping. Perfect for machinery work.

Steven ★★★★★

I’ve been rebuilding a few jigs on the mill and these 5/16-18 socket cap screws seated perfectly with the hex drive, no stripping at all. The alloy steel with that black oxide finish feels solid and should hold up fine in tight spots.

William M. ★★★★★

The black oxide finish on these screws held up nicely against some coolant splash during a jig setup. They seated cleanly in the threaded holes without any binding.