As a standard fastener, eye lifting screws are made of 20 or 25 steel. They are widely used in electromechanical products, mainly for lifting loads. Eye lifting screws must be fully forged. Forgings shall be normalized and descaled. The grain size of finished products shall not be lower than Grade 5, and forgings shall be free from overheating and crack defects. Eye lifting screws generally require no surface treatment, but galvanizing passivation, chrome plating and other surface treatments can be carried out according to application requirements.

Detailed provisions are specified for the structure, dimensions, technical requirements, lifting capacity and service conditions of eye lifting screws. Therefore, except for standard fastener manufacturers, other manufacturers mainly select and apply them. The principles for selecting eye lifting screws are: first ensure operational safety, then consider factors such as connection dimensions to achieve safety, economy and aesthetics. To select and use eye lifting screws correctly, it is necessary to conduct an in-depth analysis of their stress conditions, carefully study the contents specified in standards and strive for a thorough understanding.

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