A bolt is a type of fastener having a threaded shaft and is normally used with a nut to hold it in place. Bolts are used in assembling parts under heavy load or subjected to continuous vibration to hold stability for a longer period. It comes in a range of materials to suit the requirements for particular environmental and operation conditions: stainless steel, carbon steel, alloy ste... https://www.dalloyedbolts.com/bolt-manufacturers-suppliers-stockists-exporters.html