ScharnierPin

ScharnierPin is a hinge pin, a small cylindrical shaft that forms the pivot of a hinge by passing through aligned holes in the hinge leaves. It enables rotation between the connected parts, such as a door and its frame or a lid and its container.

Design and variants vary by application. ScharnierPins can be removable, passing completely through the hinge and retained by a clip, cotter pin, or end cap; or captive, remaining within the hinge assembly and released by tools. Some designs include spring-loaded action to provide self-closing or damping, and others use locking or threaded features to resist loosening.

Materials and finishes reflect use conditions. Common choices include carbon steel for general strength, stainless steel for corrosion resistance, and lighter metals such as brass or aluminum for specific friction or weight requirements. Finishes range from zinc plating and black oxide to passivation or coating tailored to environmental exposure. Pin diameter and length are chosen to match hinge leaf thickness and bolt-in clearance, with fits ranging from slip to press configurations depending on retention needs.

Installation and maintenance emphasize proper fit and care. Pins are installed by aligning hinge leaves and driving the pin through the bore; improper alignment can cause binding or bending. Periodic lubrication reduces wear, and inspection should check for bending, corrosion, or loosening. Replacement is recommended when wear or damage impairs hinge function.

Applications are widespread in furniture, cabinetry, interior and exterior doors, gates, and various machinery enclosures. The ScharnierPin is a standard hinge component enabling reliable rotation and service life across many mechanical assemblies.