Mutual Screw & Supply

HOLO-KROME 65026 5/16-24 X 3/8" Socket Cap Screws | Button Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 65026 5/16-24 X 3/8" Socket Cap Screws | Button Head Hex Socket - Main image
$26.54 $36.86 In stock

These 5/16-24 x 3/8" 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: Button Head
  • Drive: Socket Drive
  • Thread size: 5/16-24
  • Length: 3/8"
  • 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: Socket Drive
  • Thread size: 5/16-24
  • Length: 3/8"
  • Threads per inch: 24
  • 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)

Charlotte N. ★★★★★

Used these for mounting a jig fixture on the mill table, and the hex drive made installation quick in tight spots. The threads cut cleanly without any binding, and all 100 screws had consistent depth and finish.

William ★★★★★

The black oxide finish on these screws looks clean and should resist rust well in my shop jigs. They seated smoothly with a hex key and held firm at the specified torque. Exactly what I needed for securing a small fixture plate.

Eli ★★★★★

Used a handful of these to hold a drill jig together, and the hex socket drive makes them easy to snug up in tight spots. Threads cut clean into the 5/16-24 holes without any binding, and the black oxide finish looks uniform. Fine for tooling work, no complaints.