Washers are widely used in the fastener industry. There are flat washers, square washers, etc., and different types are suitable for different occasions. Let's let the haian washer manufacturer introduce some main types of washers to you! What are the main types of washers? 1. The main function of flat washers is to distribute the bearing surface pressure, clamping load, bolts or nuts in larger on the surface area to prevent damage. Gaskets are manufactured primarily to standard specifications in a variety of sizes, materials and shapes. Flat washers are thin, flat, round universal washers with a hole in the middle. Internal and external shapes are usually circular. Depending on the function of the gasket, the hole or outer diameter can be asymmetric. Flat washer dimensions are indicated by the shank diameter of the fastener where they form part of the assembly. 2. Square Washers Construction Square washers should be used in place of round washers for timber construction and concrete floor applications; they are used with all fasteners for greater load distribution and bolts through walls or timber. 3. Square hole washers are used in the woodworking and fencing industries to combine wheel bolts and body screws with a square section below the bolt head; the washer is located on the square below the bolt head. 4. Conical washer The conical washer is designed to be used in the channel section, below the nut with a conical flange, so that the bolt assembly can fit square when tightened. 5. Spring washers Coil spring washers provide vibration resistance, they are separated by a ring on a ring and bent into a helical shape, which allows the washer to exert a spring force between the head of the fastener and the bearing surface, keeping the washer hard against The face and bolts are tightened with nuts or threaded holes, creating greater friction and rotational resistance. The spring washer is a left-handed helix, allowing the threads to be tightened in a clockwise direction in the right hand. When a left-handed rotational motion is applied, the raised edge bites into the underside of the bolt or nut and the part to which it is bolted, resisting rotation. Spring washers are ineffective against left-hand threads and hardened surfaces and should not be used with flat washers under the spring washers, as this keeps the spring washers from biting into parts that resist rotation. Spring washers are produced according to various standards, indicating thickness and section size, usually square or rectangular section. The popular spring washers are single coil, but are also available as double coil washers. 6. Ribbed Contact Lock Washers A washer with surface ribbed serrations on one or both flat surfaces, designed to engage a connecting material or a bolt or nut to alter electrical contact or locking action. Flat washers can be made from any type of material that can be punched, pressed or cut. Gaskets are made from a variety of metallic and non-metallic materials, including mild and high carbon steel, stainless steel and steel alloys, copper-based materials, beryllium copper, phosphor bronze, titanium, aluminum, fiber, mica, mylar, rubber, Nylon, PTFE and phenolic resin. Gasket material is important because certain applications require specific materials to ensure the gasket can withstand environmental conditions. For example, if the washer is subjected to cyclic loading, strength is an important design criterion, and in the case of springs and disc washers requires the use of high alloy steel or spring steel. Use non-metallic materials, etc., when the gasket is subjected to light loads or soft surfaces that may be damaged by metal gaskets.