Mutual Screw & Supply

1/2-12 X 3" Socket Cap Screws | Hex Socket Drive | Partially Threaded | Alloy Steel Thermal Black Oxide (50 / Pkg.)

1/2-12 X 3" Socket Cap Screws | Hex Socket Drive | Partially Threaded | Alloy - Main image
$62.05 $100.08 In stock

These 1/2-12 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 style: Partially Threaded
  • Thread size: 1/2-12
  • 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 style: Partially Threaded
  • Thread size: 1/2-12
  • Length: 3"
  • Threads per inch: 12
  • Measurement type: Inch
  • Pack quantity: 50 per package
Before you pay

Check the method and total at checkout.

When it ships

Allow for processing time as well as the journey to you.

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

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

View policy
If you need a refund

Keep your order number and contact the store to start.

Please contact us for the refund processing timeframe before returning an item.

View policy
Delivery costs

Review the cost for your destination and chosen service.

Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

View policy
Returning an item

Check the return conditions before sending anything back.

United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

View policy

Customer Reviews (4.6 / 5 · 5 reviews)

Aurora ★★★★★

Installed these in a custom press fixture I'm building and the threads ran smooth all the way down without binding. The black oxide finish feels durable and didn't chip during tightening, which was a concern I had.

Nicholas ★★★★★

All six of my jigs came together exactly square because the black oxide finish lets the wrench seat in the socket without any slip. The partial thread gave me just the right grip for clamping a stack of plates, and the alloy steel held up to a full day of tightening without a hint of distortion.

Natalie H. ★★★★★

The partial threading on these 1/2-12 socket cap screws made all the difference for my jig assembly, giving me just the right grip depth without bottoming out. The black oxide finish feels tough and uniform across all 50 pieces, and they seated perfectly with a hex key.