Mutual Screw & Supply

M6-1 X 55mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (200 / Pkg.)

M6-1 X 55mm Socket Cap Screws | Flat Head Hex Socket Drive | Partially Threaded - Main image
$30.07 $50.12 In stock

These M6-1 x 55mm 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: Partially Threaded
  • Thread size: M6-1
  • Length: 55mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Head style: Flat Head
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 12.9
  • Drive type: Hex Socket Drive
  • Thread style: Partially Threaded
  • Thread size: M6-1
  • Length: 55mm
  • Measurement type: Metric
  • Pack quantity: 200 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)

Chloe ★★★★★

The black oxide finish makes these feel really durable compared to some other fasteners I’ve used before. They seated perfectly in a jig I’m building for a machine tool project.

Benjamin E. ★★★★★

Exactly the right length for securing jig fixtures; the hex socket drive makes tightening in tight spots much easier. These bolts threaded smoothly into pre-tapped holes without any binding.

Penelope N. ★★★★★

The black oxide finish on these is flawless and uniform across all 200 pieces, which really makes a difference when you're building something you'll show off. I've torqued a few to spec and the hex socket engagement feels solid, no stripping or slop at all.