Machine key fasteners from Bay Supply can be used to secure your gears, cams and sprockets. Our available selection of gib head keys, key sets and machine keys will keep your driveshafts connected to your gears. Instead of replacing your entire assembly, you may be able to replace your machine key fastener and have your parts working like new again. Bay Supply is a leading source for hardware and fasteners like machine keys. Shop key fasteners online in our store to get the very best.