AYECEHI 5Pack 5.5 x 2.1 MM 10A DC-099 Power Jack Cord Socket Threaded Female Mount Connector Adapter with Waterproof Cover Cap

Tested at 8 amps, didn’t get even warm. Fitting is perfect. No complaints

Very high quality power jack. Love that the inner prongs are all the way around. Not just one prong. Makes for a very solid and secure connection.However, be cautious mounting these to any metal panel. The outer prongs are part of the outside threads. I installed this on a metal pedal board and I actually shorted one of my patch cables to the board and made sparks. Had to insulate the power jack and it works fine.

With a number of different barrel cables (e.g. https://www.amazon.co.uk/gp/product/B08DXRBSSM/) the connection was intermittent, would only be (just) stable with the plug half-inserted, having tried a number in turn. Cutting these cables and hard-wiring worked fine.

These are some of the best panel mount 2.1mm receptacles that I've found.Very happy with them

Great for a number of electronic projects. They work and they should and are easy to install. I do with the protective cap held up a bit better, but I can just 3d print some hard caps. My only real complaint I have about these is that I wish the wires were a silicone coated wire. The wires are more like a plastic or PVC type coating. The wires have a tendency to melt when soldering, not an issue if you cover the wire with heat shrink but a silicone wire would hold up better and be more heat resistant.