Mutual Screw & Supply

HOLO-KROME 68022 1/4-20 X 3/8" Socket Cap Screws | Low Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 68022 1/4-20 X 3/8" Socket Cap Screws | Low Head Hex Socket Drive | - Main image
$23.83 $39.06 In stock

These 1/4-20 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: Low Head
  • Drive: Socket Drive
  • Thread size: 1/4-20
  • Length: 3/8"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Low Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Socket Drive
  • Thread size: 1/4-20
  • Length: 3/8"
  • Threads per inch: 20
  • Measurement type: Inch
  • Pack quantity: 100 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 (4.8 / 5 · 5 reviews)

Ella ★★★★★

These little screws have been perfect for my jig builds, the low head profile sits flush in tight spots where a standard cap screw would never fit. The black oxide finish looks sharp and hasn't chipped even after repeated wrenching.

Penelope I. ★★★★★

Used a handful of these low head screws to secure a fixture on my milling table, and the hex drive made installation smooth even in tight spots. The thermal black oxide finish seems durable and hasn't flaked, which is exactly what I need for tooling applications.

Daniel ★★★★★

The black oxide finish on these socket cap screws is holding up well in my jig setup, no signs of wear after a few weeks of use. The low head profile was exactly what I needed for tight clearance—these fit perfectly without binding. A solid choice for machinery work.