Mutual Screw & Supply

HOLO-KROME 86440 #10-24 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 86440 #10-24 X 2-1/4" Socket Cap Screws | Hex Socket Drive | Alloy - Main image
$32.05 $45.79 In stock

These #10-24 x 2-1/4" 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: #10-24
  • Length: 2-1/4"
  • 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: #10-24
  • Length: 2-1/4"
  • 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)

Henry R. ★★★★★

Got a full box of these for a fixture assembly, and the black oxide finish is honestly the star—uniform and tough. The socket drive seated cleanly in my hex wrench with zero stripping, and the alloy steel feels plenty rigid for precision work.

Charlotte ★★★★★

I needed some longer screws for a jig I was building, and these #10-24 x 2-1/4" socket caps fit the bill perfectly. The hex drive held up well under the wrench torque without stripping.

Elizabeth ★★★★★

The black oxide finish on these screws gives them a nice, even look and seems to resist scratches well during assembly. I used them to secure a steel bracket for a small jig, and the hex socket drove smoothly without any cam-out. They’re a solid choice for precision work where you need a clean, flus