Cap Screw, M5x55, Socket Head

55 mm is exactly the length I needed for a bench top jig, and the Allen key fit is snug with zero wobble. These drove in clean without stripping, which is more than I can say for some cheaper sets I’ve used.

The hex socket is machined cleanly so the Allen key fits snug without wobbling, making it easy to drive into my aluminum fixture. These are exactly the right length for the 3/8" plate I was mounting.

The 55mm length is perfect for my bench top jig setup, and the socket head grips the Allen key without slipping even when I torque it down. These are solid and consistent, no stripped edges after a week of assembly work.