Mutual Screw & Supply

M16-2 X 55mm Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded | Class 12.9 Alloy Steel Thermal Black Oxide (25 / Pkg.)

M16-2 X 55mm Socket Cap Screws | Button Head Hex Socket Drive | Fully Threaded - Main image
$37.99 $63.32 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
  • Head style: Button Head
  • 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
  • Head style: Button Head
  • 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: 25 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)

Owen J. ★★★★★

The hex drive on these M16-2 screws grabbed my Allen key perfectly, no wobble at all. I used them to rebuild a jig fixture, and the 55mm length was just right for the thick steel plate. Nice to find tough hardware that feels solid in hand.

Brian ★★★★★

The thermal black oxide finish on these screws really holds up well even after tightening with an impact driver, and the hex socket didn't strip at all. I used them to secure some heavy-duty jig fixtures on my milling table, and the 12.9 alloy steel class gives me confidence they won't snap under lo

Evelyn ★★★★★

I needed some heavy-duty fasteners for a machining fixture, and these fully threaded M16 screws provided the exact grip I was after. The black oxide finish already seems more resistant to shop oil and moisture than plain steel ones I've used.