Mutual Screw & Supply

HOLO-KROME 72026 #4-40 X 3/4" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 72026 #4-40 X 3/4" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$21.42 $32.45 In stock

These #4-40 x 3/4" 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: #4-40
  • Length: 3/4"
  • 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: #4-40
  • Length: 3/4"
  • Threads per inch: 40
  • Measurement type: Inch
  • Pack quantity: 100 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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 (5.0 / 5 · 5 reviews)

Victoria E. ★★★★★

Threading is clean and consistent across all 100 pieces, so they seat flush without any binding. Used them to rebuild a jig at the shop and they've held up through a couple dozen cycles without stripping.

Madison ★★★★★

The black oxide finish is deeper and more uniform than what I've gotten from other fastener suppliers, so these look great on my tooling fixtures. Threads engaged cleanly on the first pass and all 100 pieces showed consistent quality.

George A. ★★★★★

I needed some small, precision fasteners for a jig I’m building, and these #4-40 x 3/4" screws fit perfectly with zero binding. The black oxide finish feels durable and hasn’t flaked during installation.