Fastener Solutions sells a variety of sizes and kits for Hex Keys. Hex Keys are also known as an Allen keys or Allen wrenches. Hex Keys are a small tool used for for bolts and screws with a hexagonal sockets. Hex Keys or Allen wrenches are commonly used in furniture and mechanical applications. To order a set today contact Fastener Solutions or check out our selections below. Not finding what your looking for? Check out our Preferred Catalog for more options.