Castle Nut Hexagonal Slotted Castellated Wheel Spindle Engineering High Grade Taper Plunger Mild Steel Polished Black Finish Nuts Manufacturer

A castellated nut also called a castle nut or slotted nut, is a nut with slots (notches) cut into one end. The name comes from the nut’s resemblance to the crenelated parapet of a medieval castle.
The bolt or axle has one or two holes drilled through its threaded end. The nut is torqued properly and then if the slot is not aligned with the hole in the fastener, the nut is rotated forward to the nearest slot. The nut is then secured with a split pin/cotter pin, R-clip, or safety wire. It is a positive locking device. Castellated nuts are used in low-torque applications, such as holding a wheel bearing in place.

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. It is noteworthy that while the term heat treatment applies only to processes where the heating and cooling are done for the specific purpose of altering properties intentionally, heating and cooling often occur incidentally during other manufacturing processes such as hot forming or welding.

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