Mutual Screw & Supply

HOLO-KROME 720000390 #6-32 X 5/16" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 720000390 #6-32 X 5/16" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$18.22 $26.8 In stock

These #6-32 x 5/16" 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: #6-32
  • Length: 5/16"
  • 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: #6-32
  • Length: 5/16"
  • Threads per inch: 32
  • Measurement type: Inch
  • Pack quantity: 100 per package
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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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 (4.6 / 5 · 5 reviews)

Edward J. ★★★★★

Used these to replace stripped screws on a milling machine fixture—the black oxide finish blends right in and the hex socket makes them easy to torque down without cam-out.

Christopher ★★★★★

The black oxide finish on these screws gives them a nice, uniform look that blends in well on my equipment. They threaded smoothly into the pre-tapped holes on my jig without any binding.

Harper D. ★★★★★

These are exactly the right length for my jig, and the black oxide finish gives them a nice, uniform look against the alloy steel. The hex socket drive seated cleanly on my driver without any stripping, and all 100 in the package were consistent.