The sort of electrical contacts you will need for your equipment will vary widely depending upon a number of different factors. If it’s a brazed contact, this simply means that it’s a machined part, which has had a silver plate welded onto it. Contacts and assemblies are used for both industrial and commercial needs. Indeed, you’d be hard pressed to find any industry which doesn’t rely on contacts at some point, whether for construction and assembly, or even during research and development. Both aerospace and automotive companies make extensive use of these parts, but those are just two obvious and well-known examples.