Mutual Screw & Supply

M16-2 X 55mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (50 / Pkg.)

M16-2 X 55mm Socket Cap Screws | Hex Socket Drive | Fully Threaded | Class 12.9 - Main image
$41.18 $63.36 In stock

These M16-2 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
  • Drive: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M16-2
  • Length: 55mm
  • Applications: Machinery, tooling, jigs, and precision assemblies

Specifications

  • Product type: Socket Cap Screws
  • Material: Alloy Steel
  • Finish: Thermal Black Oxide
  • Grade: Class 12.9
  • Drive type: Hex Socket Drive
  • Thread style: Fully Threaded
  • Thread size: M16-2
  • Length: 55mm
  • Measurement type: Metric
  • 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 (5.0 / 5 · 5 reviews)

David D. ★★★★★

The black oxide finish on these M16 screws is holding up perfectly in my jig setup, no signs of rust after repeated oil exposure. Thread engagement feels precise and smooth, and the hex socket drive grips tight without stripping. Exactly what I needed for heavy-duty tooling.

Mia M. ★★★★★

Had to torque these to 320 Nm on a press jig and the hex socket held perfectly without any rounding. The black oxide finish also resists rust better than the plain steel screws I used to buy.

Scarlett B. ★★★★★

Installed these on a heavy-duty fixture at work and the 12.9 alloy steel really holds torque without stripping. The black oxide finish is a nice touch for corrosion resistance too.