Pin Assembly with Machined Dowel Pin Boss and Stepped Shaft Diameters

Pin diameter fit class and boss face perpendicularity to pin axis are the critical callouts for a brass machined dowel pin boss; a pin diameter above the h6 tolerance field produces a loose press fit that allows the pinned joint to walk under vibration, while boss face runout causes the mated component to tilt off the design seating plane under tightening load. Dongguan Jiarui Hardware Technology (Dongguan, Guangdong, founded 2012) turns and grinds this brass machined dowel pin boss with stepped shaft profile using Swiss machining, turning, and external cylindrical grinding at their 2,000 m² of floor space Dongguan facility, with pin diameter fit class, boss face perpendicularity, and overall length verified against your print during first article review. IATF 16949 and ISO 9001 certifications govern process documentation for automotive, medical equipment, aerospace, and general industry machined dowel pin boss applications. For quoting, include pin diameter tolerance, boss face runout, overall dimensions, and brass grade to receive a production project quote from our Dongguan team. Applications cover military, automation, and drones.