MECI has a range of Top-Hat, Shoulder Washers and transistor insulating bushes designed for use with a Mica or Silicone Rubber or Al-Ox Washer to insulate the fixing screw from the metal transistor tab and heatsink.

Various barrel lengths and diameters are available to suit many applications, including the popular TO220 and TO3 devices.

The standard material used is Glass-Filled Nylon 66 in black, with some parts having an option of the high-spec aerospace grade material PPS.

Custom sizes are available to special order.