Its materials are stainless steel and carbon steel, and carbon steel is also iron. Commonly used spring washers have M3, M4, M5, M6, M8, M10 spring washers national standard GB/T 94.1-87.

The standard specifies a standard spring washer with a specification of 2-48mm. Reference standard GB94.4-85 “Elastic Washer Technical Conditions Spring”. M12, M14, M16. These specifications are more commonly used. washer”

Spring washer effect：

The spring washer is installed under the nut to prevent the nut from loosening.

It is stated in the national standard.

Hexagonal slotted nuts are designed for use with bolts with holes at the end of the screw.

The cotter pin of the brake lever is inserted into the hole of the screw from the slot of the nut to prevent the nut from loosening automatically.

It is mainly used in occasions of vibration, vibration or alternating deformation.

In the mechanical design and production, the methods to prevent the nuts (or bolts) from automatically loosening are as follows:

1. Padded spring washer; (simple and easy to make)
2. Use hexagonal slotted nut + split pin; (processing procedures have been added many times)
3. Padded stop washer; (processing procedures are added every year)
4. Insert the steel wire into the hexagon head of the hexagon bolt.

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Spring washers are used to prevent loosening. If the bolts connecting the motor to the frame are generally spring washers, because the motor vibrates if there is no spring washers, the nuts will loosen.

Generally, insert spring washers on the fasteners on the equipment with vibration. Generally, no gasket is needed on the orchid! The addition of spring gaskets on the flange is related to the medium flowing in the pipeline.

If it is easy to produce pulses, it is best to add spring gaskets. There are high-speed fluids, and the diameter changes. Don’t make generalizations. On some valves, the stuffing box gland flange requires spring gaskets.

Quick, easy and automatic selection of spring washers is included. The bolts connecting the motor and the frame generally need to be added with spring washers, because if the motor is vibrated, if there is no spring washer, the nut will loosen.

Generally, the fastener on the equipment with vibration is inserted into the spring washer, and the flange is generally not required to be added. ! The addition of spring gaskets on the flange is related to the medium flowing in the pipeline.

If it is easy to produce pulses, it is best to add spring gaskets. There are high-speed fluids, and the diameter changes. Don’t make generalizations.

On some valves, the stuffing box gland flange requires spring gaskets. Quick, easy and automatic selection of spring washers is included.

The difference between spring washers and flat washers：

Spring washers can compress and prevent loosening and increase the function of pre-tightening force, while flat washers do not have this function.

It can be used to expand the fastening contact area, prevent the friction between the bolt and the workpiece, and protect the surface of the connection to prevent the bolt and nut from being tightened Scratch the surface of the workpiece.

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However, some important connections, such as the place where the power is transmitted by the friction force generated by the main resistance to compression, cannot be used with spring washers.

If the rigidity of the connection is reduced, accidents may occur, so spring washers can be omitted.

When the strength of the connecting parts is consumed, flat washers or flange bolts are used to increase the contact area.

When there is vibration, pulse, and the temperature of the medium has relatively large fluctuations, spring washers must be used.