Use this heat sink set to run voltage regulators, MOSFETs, BJTs, and any TO-220 package parts at their full capacity.
This set includes the aluminum heat sink with threaded mounting screw hole, electrical insulator sheet (conducts heat but not electricity), plastic insulating washer, and mounting screw.
Compatible with both single and dual gauge TO-220 integrated heatsink tabs.
For single gauge (the thin style) heatsink tabs you will want to trim or file down the small diameter section of the plastic insulating washer. A simple file such as a nail file works well.
Refer to the diagram below showing which section to trim.