Mutual Screw & Supply

5/8-11 X 1-1/4" Socket Cap Screws | Flat Head Hex Socket Drive | Nylon Pellet | Fully Threaded | Alloy Steel Thermal Black Oxide (50 / Pkg.)

5/8-11 X 1-1/4" Socket Cap Screws | Flat Head Hex Socket Drive | Nylon Pellet | - Main image
$270.3 $409.54 In stock

These 5/8-11 x 1-1/4" 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: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/8-11
  • 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: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 5/8-11
  • Length: 1-1/4"
  • Threads per inch: 11
  • 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 (5.0 / 5 · 5 reviews)

Samuel T. ★★★★★

The nylon pellet locking feature is a nice touch—these hold tight on my jig without backing out. Threads were clean and engaged smoothly in the tapped holes. Perfect for my tooling setup.

Ava ★★★★★

Used a few of these today to replace worn-out bolts on a jig fixture and they seated perfectly without any binding. The black oxide finish held up fine against the wrench, and the nylon pellet locked the threads just as I needed.

Sebastian F. ★★★★★

The nylon pellet in these is a lifesaver—no more fighting with thread-locking compound on a job where I need adjustment later. The black oxide finish looks sharp and they’ve held up through a whole cycle of heavy jig use. Five out of five for sure.