Mutual Screw & Supply

3/8-16 X 3" Socket Cap Screws | Hex Socket Drive | USA Made | Alloy Steel Thermal Black Oxide (50 / Pkg.)

3/8-16 X 3" Socket Cap Screws | Hex Socket Drive | USA Made | Alloy Steel - Main image
$31.51 $45.01 In stock

These 3/8-16 x 3" 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: 3/8-16
  • Length: 3"
  • 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: 3/8-16
  • Length: 3"
  • Threads per inch: 16
  • Measurement type: Inch
  • Pack quantity: 50 per package
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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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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)

Sebastian ★★★★★

The black oxide coating on these screws gives them a nice, uniform finish that resists rust well in my shop. They threaded cleanly into my jig without any binding or galling, which I appreciate. For precision assemblies, these are a solid choice.

Madison L. ★★★★★

I needed some solid screws for a custom jig I was building, and these cap screws fit perfectly with their hex socket drive. The 50-pack gives plenty of spares, and the alloy steel feels really sturdy for the price.

George ★★★★★

The black oxide finish held up perfectly when I torqued these down on a tooling fixture—no galling at all. Threads were clean and started smoothly in a tapped hole.