Stützstifte

Stützstifte, also known as support pins or dowel pins, are simple mechanical fasteners used to align and locate components. They are typically cylindrical or tapered pins that are inserted into precisely drilled holes in mating parts. The primary function of a stützstift is to prevent relative movement between assembled parts, ensuring their correct positioning and maintaining structural integrity.

These pins are commonly made from hardened steel, stainless steel, or brass, chosen based on factors like load-bearing requirements, corrosion resistance, and cost. The diameter and length of the stützstift are critical for a snug fit within the holes, which are usually reamed to a close tolerance. A slight interference fit or a slip fit is often employed to hold the pin securely.

Stützstifte find widespread application across various industries, including automotive, aerospace, machinery, and electronics. They are used in assembling engines, gearboxes, jigs, fixtures, and numerous other mechanical assemblies. In some applications, they may also serve to transfer shear loads. While seemingly basic, the precise placement and proper selection of stützstifte are crucial for the overall performance and reliability of a mechanical system. Their simplicity, cost-effectiveness, and ease of installation make them a fundamental component in countless engineering designs.