Mutual Screw & Supply

#4-40 X 1/4" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Fully Threaded | Alloy Steel Thermal Black Oxide (100 / Pkg.)

#4-40 X 1/4" Socket Cap Screws | Hex Socket Drive | Nylon Pellet | Fully - Main image
$185.5 $285.38 In stock

These #4-40 x 1/4" 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 style: Fully Threaded
  • Thread size: #4-40
  • Length: 1/4"
  • 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 style: Fully Threaded
  • Thread size: #4-40
  • Length: 1/4"
  • 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 (4.6 / 5 · 5 reviews)

William ★★★★★

Used these on a small jig fixture and the black oxide finish made them easy to handle without any glare. The hex socket drive seated firmly with a 1/16" Allen key, and all 100 came out of the bag with clean threads.

Owen ★★★★★

I needed these for a small jig I was building, and the hex socket drive made installation a breeze with the right driver. The nylon pellet adds a nice locking touch, too.

Aurora S. ★★★★★

The black oxide finish on these #4-40 screws looks great and resists fingerprints, which is a nice touch since I'm using them on exposed jig hardware. The nylon pellet locks them in place firmly, so no Loctite needed for my precision assemblies.