Mutual Screw & Supply

3/8-24 X 1/2" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | Alloy Steel Thermal Black Oxide (100 / Pkg.)

3/8-24 X 1/2" Socket Cap Screws | Flat Head Hex Socket Drive | Fully Threaded | - Main image
$27.57 $37.77 In stock

These 3/8-24 x 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
  • Head style: Flat Head
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 3/8-24
  • Length: 1/2"
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: 3/8-24
  • Length: 1/2"
  • Threads per inch: 24
  • Measurement type: Inch
  • Pack quantity: 100 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 (4.4 / 5 · 5 reviews)

Samuel ★★★★★

Installed these in a jig I'm building and the flat head sits perfectly flush without any gaps. The black oxide finish seems consistent across all 100 pieces.

Adam G. ★★★★★

The hex socket drive grabbed my wrench securely without any slipping, even in a tight jig setup I’m working on. They’re fully threaded, which gave me solid hold without needing extra washers. For fifty bucks, this pack of a hundred screws feels like a steal for precision work.

Miles ★★★★★

These little black oxide screws fit perfectly into my milling fixture's threaded holes — the hex drive grabbed cleanly without stripping. The 100-count package is generous for the price.