Mutual Screw & Supply

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

#4-40 X 3/4" Socket Cap Screws | Low Head Hex Socket Drive | Alloy Steel - Main image
$53.54 $79.91 In stock

These #4-40 x 3/4" socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a hex socket drive. They are well suited to machinery, tooling, jigs, and precision assemblies.

  • Material and finish: Alloy Steel Thermal Black Oxide
  • Drive: Hex 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: Hex 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 · 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)

Olivia A. ★★★★★

The black oxide finish on these #4-40 screws makes them blend perfectly into my jig, and the hex drive seated firmly without cam-out. Exactly what I needed for a tight assembly where low head height was critical.

Penelope Z. ★★★★★

Needed some low-profile fasteners for a tight clearance on a tooling plate, and these #4-40 screws fit perfectly. The hex socket drive made installation easy with a standard Allen key, and the black oxide finish looks clean. Exactly what I was after.

Kevin ★★★★★

Used a few of these to mount a jig fixture on my mill table and the low head profile let me get a wrench in a tight spot. The black oxide finish seems durable and they threaded into tapped holes without any binding.