Torque screwdriver. You can get digital motor-driven ones, and ones that work like torque wrenches, with a clutch that releases once you exceed the torque setti

Torque screwdriver. You can get digital motor-driven ones, and ones that work like torque wrenches, with a clutch that releases once you exceed the torque setting. Torque screwdrivers have a limited range of supported torques, and computer heatsink fasteners generally need fairly low torque, so be sure to get one that goes low enough.