Small fasteners with big uses
A type of mechanical parts used for fastening and connecting, widely used in various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, meters and other fields. Fastener products come in a wide variety of specifications and performances, with a high degree of standardization, serialization and generalization. There are many types of fasteners, mainly including bolts, studs, screws, concrete screws, nuts, washers , rivets and solar bracket photovoltaic bracket .
fasteners used in…
These fasteners are widely used in industrial production and daily life. For example, bolts and nuts are often used to connect two parts with through holes, while studs are suitable for occasions where one of the connected parts is thicker or needs to be disassembled frequently. Screws are divided into machine screws, set screws and special-purpose screws according to their use, and are used for different fastening and connection needs.
China fasteners Classification by intensity
Common strength grades of carbon steel bolts are 3.6, 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 9.8, 10.9, 12.9, and nuts are 5, 6, 8, 10, 12. Bolts and nuts above grade 9.8 (including grade 9.8) are generally called high-strength fasteners.
China’s fasteners are mostly made of medium carbon steel, and alloy steel is also used. When there are special requirements such as corrosion protection or conductivity, copper, copper alloys or other non-ferrous metals are also used.
Post time: Nov-14-2024