Nuts and bolts are common mechanical connectors, widely used in all walks of life, and their main role is to connect two or more parts together to complete the assembly or maintenance of the machine.
Bolt level, and the meaning of bolt levelClass 8.8 hexagon head bolt
GB 819-85: Cross Slot Countersunk Head Screw
GB/T 819.1-2000: “Cross recessed countersunk head screws Part 1: Steel Grade 4.8”
A bolt is a typical external threaded part and is usually labeled “B”. It has a hexagonal head that can be tightened with a wrench or wrench, or with a pneumatic or hydraulic tool.
When it comes to nuts, I believe you will not be very strange, nuts are often used with screws as a fastener, which can be seen everywhere in daily life, and it can be seen that the market demand for nuts is really considerable.
