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Bolt, mechanical fastener that is usually used with a nut for connecting two or more parts. A bolted joint can be readily disassembled and reassembled; for this reason bolts or screw fasteners are used to a greater extent than any other type of mechanical fastener and have played an important part in the development of mass-produced articles and steel structures.

If you are getting ready for a huge industrial contracting job, you want to use nuts and bolts to get the job done right. Since contractors have to work with heavy machinery, there are instances where you will need to replace old nuts with new ones. This means you will have to know which ones are most cost effective, durable, and simple to use.

In such a situation, you will have to weigh the value of the different fasteners and decide which one best suits your needs. With that in mind, here are some notable advantages of using nuts & bolts as reliable fasteners.

The Different Services

Heat Treatment

Heat Treatment is a group of industrial, thermal and metalworking processes That is used to change the physical, and sometimes chemical, properties of a material. This is 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, carburizing, normalizing and quenching. Although 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.


Broaching is a machining process that uses a toothed tool, called a broach, to remove material. There are two main types of broaching: linear and rotary. In linear broaching, which is the more common process, the broach is run linearly against a surface of the workpiece to effect the cut.

CNC Machining

Numerical control is the automated control of machining tools by means of a computer. A CNC machine processes a piece of material to meet specifications by following a coded programmed instruction and without a manual operator directly controlling the machining operation

Blank Bolt & Nut Forging

Bolts can come in a wide range of different sizes and shapes, but the basic production process generally remains the same. It starts with cold forging steel wire into the right shape, followed by heat treating to improve strength and surface treating to improve durability, before being packed for shipment.

Roll Threading

Roll threading is a process by which steel is extruded to form the threaded portion of a fastener, instead of being removed as in cut threading. In this process, a bolt is manufactured from a reduced diameter round bar. For example, a 1″ diameter bolt is manufactured from 

Slotting of Castle Nuts

The main difference between castle and slotted nuts is found on the turret end section where the split pin is found. On the castle nut the end section is turned down slightly, enabling the split pin to be wound round and pinned against the turret so that the pin does not protrude. On a slotted nut this is not possible

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