About This Product
This Wera 840/4 IMP DC Hex-Plus socket screw is a premium fastener for serious assembly work.

It's 5.

0mm in diameter and 50mm long, with a Hex-Plus drive that reduces wear on the socket and improves torque transfer.

The 'IMP' designation means it's impact-rated – so it handles impact wrench abuse without stripping.

DC stands for 'direct current' coating?
Actually, it's likely a corrosion-resistant finish, but the key point is this screw is built to hold tight in demanding industrial or automotive applications.
Wera is a top-tier German tool brand – known for quality.
This is a single screw, so it's great for replacements or specific projects where you need exactly this spec.
Hex-Plus geometry gives you more contact area with the tool, reducing rounding.

Solid, reliable, and made to last.