Mutual Screw & Supply

#3-56 X 7/16" Socket Cap Screws | Hex Socket Drive | Fully Threaded | Alloy Steel Thermal Black Oxide (200 / Pkg.)

#3-56 X 7/16" Socket Cap Screws | Hex Socket Drive | Fully Threaded | Alloy - Main image
$27.46 $40.38 In stock

These #3-56 x 7/16" 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: #3-56
  • Length: 7/16"
  • 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: #3-56
  • Length: 7/16"
  • Threads per inch: 56
  • Measurement type: Inch
  • Pack quantity: 200 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 (4.6 / 5 · 5 reviews)

Matthew M. ★★★★★

I needed some small fasteners for a jig I'm making, and these 3-56 screws with the hex socket drive fit perfectly. The black oxide coating looks uniform and should resist rust in my workshop.

Zoe ★★★★★

The black oxide finish on these screws gave them a nice, uniform look against the aluminum plate I used them on, and the hex socket drove smoothly without stripping. For precision work like building a small CNC router mount, this pack is exactly what I needed.

Sofia ★★★★★

Installing these in a small jig fixture and the threads caught perfectly on the first try, no cross-threading at all. The black oxide finish seems durable enough for repeated assembly work.