BDE-Fastening & Joining

Washers are primarily used as a seat to distribute load, but they may also provide spring tension, span oversize holes, insulate, seal, or provide electrical connection.

Design-for-assembly (DFA) and design-for-manufacture (DFM) techniques can be applied to products assembled manually or automatically or manufactured by specific techniques, such as machining, die casting or injection molding.

These nuts are squeezed into round, punched or drilled holes in sheet metal between a parallel punch and flat anvil.

A multiple-threaded nut enclosed in a spring-steel retainer, this fastener has both the high strength associated with multiple-threaded fasteners and the versatility and self-retaining features of spring-steel fasteners.

Designing for stability is especially important because many variables that affect joint behavior cannot be directly controlled.

Spring clips use compressive spring force to secure assembly components.

Typical specials include self-captive tapping screws and double-thread combinations.

Fastener coatings or finishes improve appearance, increase corrosion resistance, and provide lubricity.

More than 50% of total production time is spent on assembly or fastening.

Mainly used for rapid manual assembly and disassembly, quick-release pins use a mechanism to provide a locking action.

Robots generally have a single arm that has from two to six axes of motion.

The most common forms of welded fasteners are screws and nuts.

In stud welding, the heat of an electric arc drawn between the fastener and the work melts a quantity of metal, after which the two heated parts are brought together under pressure.

Setscrews are semipermanent fasteners that hold collars, pulleys, or gears on shafts.