Bolts are a category of industrial fasteners, usually devised with a peculiar head style and externally threaded body. Different types of Bolts can vary in head styles, sizes, thread types, manufacturing form, material and dimension standards to which they are produced to comply. Bolts are mostly used in combination of nuts OR can be directly mated to a machine part with thread compatibility. Bolts and Nuts resemble King-Queen of Fastener Dynasty.
Bolts are manufactured either by hot forging, cold forging or directly machined from hot drawn, cold drawn bar stock. Depending upon the sizes, quantity, complexity of design, economical feasibility and compliance to industry standards, any of the above methods can be followed for manufacturing bolt fasteners.
Please click for list of thread standards.