Black - Plated Lifting Eyebolt, also known as Black - Plated Hoist Ring, is a kind of crucial mechanical fastener. It is mainly used to suspend objects, providing additional strength and support, enabling the suspended objects to bear greater weight or pressure.
The Black - Plated Lifting Eyebolt consists of a ring part and a screw part. Its head is usually round, which can be easily matched with nuts or other connecting pieces, and the threaded part is designed to withstand the force from the suspended object. It is usually made of high - quality carbon steel or stainless steel, such as 20 - steel, 45 - steel, 304 stainless steel, 316 stainless steel, etc. These materials can be selected according to the actual application environment and load - bearing requirements.
The surface of the bolt is treated with a black - plating process, which can be black zinc plating, black oxide, or mechanical black coating. This treatment not only improves the corrosion resistance of the bolt, making it more suitable for use in harsh environments, but also has a certain decorative effect.
In terms of specifications, it is usually expressed by "nominal thread diameter × screw length", such as M6×10, M8×15, etc. At the same time, there are corresponding strength grades, such as 4.8 - grade, 8.8 - grade for carbon steel, and 70 - grade for stainless steel, which represent different tensile and yield strengths.
Black - Plated Lifting Eyebolts need to comply with relevant standards, such as GB/T 825 in China, DIN 580 in Germany, and ASME B18.15 in the United States. These standards specify the design, manufacturing, and testing requirements of the bolts to ensure their reliability and safety in industrial applications.
This kind of bolt is widely used in various fields, such as hoisting machinery, boiler and pressure vessel, nuclear power plant equipment, and construction industry. It can be connected with slings, chains, etc., to complete the hoisting and handling of heary- duty equipment and components
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