Carr Lane PM-6-8-3.00 | 6mm OD x 8mm Length Quick-Ship Head Press-Fit BushingQuick Ship Press Fit Bushings Metric (PM) Metric version of the popular P bushing. PM bushings are permanently pressed into the jig plate, usually flush with the top surface. They are generally used for single operation drilling or reaming, when you do not expect to replace bushings during the tooling's lifetime. PM bushings can be mounted closer together than headed bushings, but offer less resistance to heavy axial loads. Application Information PM