Mutual Screw & Supply

HOLO-KROME 86051 M8-1.25 X 40mm Socket Cap Screws | Button Head Hex Socket Drive | Alloy Steel Thermal Black Oxide (100 / Pkg.)

HOLO-KROME 86051 M8-1.25 X 40mm Socket Cap Screws | Button Head Hex Socket - Main image
$31.32 $48.94 In stock

These M8-1.25 x 40mm socket cap screws are manufactured from Alloy Steel Thermal Black Oxide, featuring a 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: Socket Drive
  • Thread size: M8-1.25
  • Length: 40mm
  • 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: Socket Drive
  • Thread size: M8-1.25
  • Length: 40mm
  • Measurement type: Metric
  • 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 (4.8 / 5 · 5 reviews)

Daniel W. ★★★★★

I've been using these to rebuild a jig at work, and the consistent thread tolerances and uniform black oxide finish made the batch feel like a quality control pass. They threaded into tapped holes smoothly without any galling, which is exactly what I needed for a precise assembly.

Eva N. ★★★★★

The black oxide coating is a nice touch—gives them a consistent finish that looks clean on my precision assemblies. Threads cut smoothly into my fixture plates without any binding, and the hex socket took a solid torque without stripping.

Miles L. ★★★★★

Put a dozen of these into a jig frame I welded up, and the black oxide finish held up way better than plain steel against the shop grime. The hex socket drive made torquing them down into tight spots way easier than fumbling with a wrench.