Parallel Dowel Pins can be used for positioning, but also for connecting and locking parts. Parallel Dowel Pins are generally used to fix the relative position between parts. Parallel Dowel Pins are divided into common, external thread, internal thread, spring type, tooth groove, knurled, cotter pin and other types. Parallel Dowel Pins are available in carbon steel, stainless steel, copper and copper alloy, zinc and zinc alloy and other materials. Parallel Dowel Pins are generally made of high-quality carbon structural steel. The materials of Parallel Dowel Pins are mostly C35 and C45, but they must be heat treated. High strength Parallel Dowel Pins are made of bearing steel. Elastic Parallel Dowel Pins are usually made of 65Mn spring steel.