Characteristics and uses of bolts

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Self Drilling Metal Screw
27/11/2020
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01/12/2020

Characteristics and uses of bolts

Hex Bolts

Hexagon bolts are the most widely used type of bolts. The grade A and grade B bolts are used for important occasions that require high assembly accuracy, and are subjected to large impact, vibration or alternating loads.

The grade Cbolts are used for occasions where the surface is rough and the assembly accuracy is not high. The threads on the bolts are generally ordinary threads.

West Asia ordinary threaded bolts have better self-locking properties. They aremainly used for thin-walled parts or occasions subject to impact, vibration or alternating loads.

Generally, bolts are partially threaded. Full-threaded bolts are mainly used for bolts with shorter nominal lengths and occasions requiring longer threads.

Hex flange

The head of a hexagonal flange bolt is composed of two parts: a hexagonal head and a flange surface. The “ratio of supporting area to stress area” is larger than that of ordinary hexagonal head bolts, so this type of bolt can withstand

higher pre-tightening force. The anti-loose performance is also good, so it is widely used in automobile engines, heavy machinery and other products.

Hexagon head bolts with holes and slots

When in use, the bolts can be locked mechanically to prevent loosening and reliable.

Hexagon head screw bolt with hole

A split pin hole is made on the screw to pass through a metal wire hole, which adopts mechanical relaxation, which is reliable and reliable.

Hexagon head reamed bolts

The bolts with reamed holes can accurately fix the mutual position of the linked parts, and can withstand the shear and extrusion generated in the transverse direction.

Cross recessed hexagon head bolts

It is convenient to install and tighten, and is mainly used for light industry, instruments and meters with small load.

Square head bolt

The square head has a larger size and a larger force-bearing surface, which is convenient for the wrench to jam its head or rely on other parts to stop rotation. It can also be used in parts with T-slots to adjust the bolt position.

Class C square head bolts are often used for rougher structures.

Countersunk bolt

The square neck or tenon has the function of stopping rotation, and is mostly used in the occasions where the surface of the connected parts is required to be flat or smooth.

T-slot bolt

T-slot bolts are suitable for occasions where the bolts can only be connected from one side of the connected parts.

Insert the bolt into the T-slot and turn it 90 degrees to prevent the bolt from coming out; it can also be used in occasions with compact structure.

Anchor bolt

It is specially used for the pre-buried concrete foundation for the base of fixed machines and equipment.

Live bolt

It is mostly used in places and tooling that need to be disconnected frequently.