OEM China Expansion Bolt - Hexagon socket bolt – Chuan Ding

Product Description

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The outer edge of the screw head of the hexagon socket head bolt is round, and the middle is concave hexagonal, while the hexagonal bolt is the one with more common screw heads with hexagonal edges. After hot galvanizing surface treatment, anti-corrosion effect is achieved.

Wood screw: It is also similar to the machine screw, but the thread on the screw is a special wood screw thread, which can be directly screwed into the wooden component (or part) to use a metal (or non-metal) with a through hole. The parts are firmly connected to a wooden component. This connection is also a detachable connection.

Washer: A type of fastener with an oblate ring shape. It is placed between the supporting surface of bolts, screws or nuts and the surface of the connecting parts, which increases the contact surface area of ​​the connected parts, reduces the pressure per unit area and protects the surface of the connected parts from damage; another type of elastic washer, It can also prevent the nut from loosening.

Retaining ring: It is installed in the shaft groove or shaft hole groove of the machine and equipment, and plays the role of preventing the parts on the shaft or hole from moving left and right.

Pins: Mainly used for positioning the left and right parts, and some can also be used for connecting parts, fixing parts, transmitting power or locking fasteners.

Rivet: a type of fastener composed of two parts, a head and a nail shaft, used to fasten and connect two parts (or components) with holes to make them into a whole. This type of connection is called rivet connection, or riveting for short. It is a non-detachable link. Because if the two parts connected together are separated, the rivets on the parts must be broken.