220660 - Miller .187 Aluminum Black Blind Rivet

Technical Specifications and Application

The Miller 220660 is a specialized aluminum blind rivet featuring a dome head and a black finish, specifically cataloged for the repair and assembly of Miller welding power sources and accessories. For welding technicians and equipment repair specialists, understanding the specifications of fasteners is key to a successful repair. This rivet features a 0.187-inch diameter, a standard size often referred to as a #6 rivet in general fabrication terms, making it compatible with standard rivet guns and nose pieces found in most maintenance toolkits.

One of the critical specifications of this fastener is its grip range, which spans from 0.187 inches to 0.437 inches. This wide range allows the rivet to effectively secure multiple layers of material, such as a sheet metal cover to a chassis frame, or a plastic bezel to a metal bracket. If a rivet with too short a grip range is used, the mandrel will break before the rivet body fully expands, leading to a loose joint. Conversely, a grip range that is too long may result in the mandrel head protruding or the rivet body not compressing tight enough against the workpiece. This specific Miller part is selected to cover the exact material thicknesses found in their equipment designs.

The choice of aluminum as the base material is significant. Aluminum rivets are non-magnetic and offer excellent resistance to atmospheric corrosion. In the context of electrical equipment like welders, using the correct material helps prevent issues related to conductivity and galvanic corrosion, especially if the chassis is also aluminum or a compatible alloy. The dome head style provides a smooth, snag-free profile on the exterior of the machine, reducing the risk of catching on cables or clothing.

Installation is straightforward using standard blind riveting tools. The black finish is pre-applied, saving the technician the time and effort of painting the rivet head after installation to match the machine's aesthetic. This attention to detail is what separates a professional repair from a quick fix. Whether you are performing a complete refurbishment of a classic Miller unit or simply replacing a loose fastener on a newer model, the 220660 rivet ensures that the mechanical assembly remains rigid, safe, and visually consistent with factory specifications.