Mutual Screw & Supply

3/8-16 X 1-1/4" Socket Cap Screws | Button Head Hex Socket Drive | USA Made | Fully Threaded | Alloy Steel Thermal Black Oxide (150 / Pkg.)

3/8-16 X 1-1/4" Socket Cap Screws | Button Head Hex Socket Drive | USA Made | - Main image
$31.32 $43.5 In stock

These 3/8-16 x 1-1/4" 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
  • Head style: Button Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 3/8-16
  • Length: 1-1/4"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Button Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 3/8-16
  • Length: 1-1/4"
  • Threads per inch: 16
  • Measurement type: Inch
  • Pack quantity: 150 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 (4.8 / 5 · 5 reviews)

Sofia Z. ★★★★★

The black oxide finish on these screws matches perfectly with my existing tooling hardware, and the hex socket drive made installation a breeze. I’ve already used a dozen for a machinery frame repair, and they threaded in smoothly without any stripping.

Benjamin ★★★★★

I needed these for a jig I was building, and the fully threaded design let me cut them to exact length without any waste. The black oxide finish also seems really durable and hasn't chipped during assembly.

Benjamin Y. ★★★★★

Finally a batch of button head screws where every single one threads cleanly by hand without any binding. The black oxide finish on these is consistent across all 150 pieces, no bare spots or uneven coating.