Mutual Screw & Supply

1/2-13 X 3-1/2" Socket Cap Screws | Hex Socket Drive | USA Made | Alloy Steel Thermal Black Oxide (25 / Pkg.)

1/2-13 X 3-1/2" Socket Cap Screws | Hex Socket Drive | USA Made | Alloy Steel - Main image
$31.58 $46.44 In stock

These 1/2-13 x 3-1/2" 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: 1/2-13
  • Length: 3-1/2"
  • 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: 1/2-13
  • Length: 3-1/2"
  • Threads per inch: 13
  • Measurement type: Inch
  • Pack quantity: 25 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 (4.0 / 5 · 5 reviews)

Thomas M. ★★★★★

The hex socket drive on these 1/2-13 screws grabs the Allen key perfectly without any slipping, and the black oxide finish gives them a tough, professional look. I used them to rebuild a jig in my shop, and they threaded into tapped holes with zero resistance. Exactly what I needed for heavy-duty to

Amelia ★★★★☆

I was a little surprised by how heavy these screws are compared to what I'm used to, but the black oxide finish looks great and they threaded smoothly into my jig. For the price, getting 25 USA-made alloy steel fasteners this size feels like solid value.

Olivia ★★★★☆

The hex drive seated deep and snug without any cam-out, which I appreciated on a tight bolt pattern. They’re solid and the black oxide finish seems durable, though one had a slightly rough edge that I hit with a file before install.