Mutual Screw & Supply

HOLO-KROME 720000273 #4-40 X 1-1/2" Socket Cap Screws | Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 720000273 #4-40 X 1-1/2" Socket Cap Screws | Hex Socket Drive | - Main image
$26.17 $40.89 In stock

These #4-40 x 1-1/2" 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: 1-1/2"
  • 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: 1-1/2"
  • Threads per inch: 40
  • 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)

Julian A. ★★★★★

The black oxide finish on these is evenly applied and hasn't chipped during repeated assembly and disassembly on my fixture. They thread cleanly into tapped holes without binding, and the hex socket drive holds the wrench firmly.

James ★★★★★

I needed some precise fasteners for a small jig I’m building, and these #4-40 x 1-1/2" socket cap screws threaded in perfectly without any binding. The hex drive made installation quick.

Scarlett ★★★★★

The thermal black oxide finish held up perfectly during assembly on my tooling fixture—no smearing or wear after repeated wrenching. Threads seated cleanly in the tapped holes, and the hex socket drive gripped firmly without stripping. Exactly what I needed for precision jig work.