High Tensile Hanger Bolts Special Fasteners Galvanized Bolts Supplier

High tensile hanger bolts are the hanger bolts with heat treating finished. Hanger bolts have threaded areas at both ends: a lag screw thread at one end and a machine screw thread on the other. They are designed for insertion into a pre-drilled hole and are ideal for overhead applications, such as suspending electrical wiring or sheet metal from wooden structures. Ever Hardware provides custom-made fasteners and customizable packaging.

Heat treating makes the hanger bolts high tensile. Heat treating is a group of industrial and metalworking processes used to alter the physical, and sometimes chemical, properties of a material. The most common application is metallurgical. Heat treatments are also used in the manufacture of many other materials, such as glass. Heat treatment involves the use of heating or chilling, normally to extreme temperatures, to achieve the desired result such as hardening or softening of a material. Heat treatment techniques include annealing, case hardening, precipitation strengthening, tempering, normalizing, and quenching.

Galvanization, or galvanisation, (or galvanizing as it is most commonly called in that industry), is the process of applying a protective zinc coating to steel or iron, to prevent high tensile hanger bolts rusting. The most common method is hot-dip galvanizing, in which parts are submerged in a bath of molten zinc. Galvanizing protects in three ways:
It forms a coating of zinc which, when intact, prevents corrosive substances from reaching the underlying steel or iron.
The zinc serves as a sacrificial anode so that even if the coating is scratched, the exposed steel will still be protected by the remaining zinc.
The zinc protects its base metal by corroding before iron. For better results, the application of chromates over zinc is also seen as an industrial trend.