Bolts & Screws

Bolts and screws are common fasteners, and can be classified into several types according to their structure and application. 
Bolts are mostly used with nuts, and their heads are commonly hexagonal or socket head cap screws. 
They are often used for heavy-duty connections in machinery and steel structures, offering stable force bearing and strong disassembly capabilities. 
Screws do not require a nut and are directly screwed into the workpiece. 
They include machine screws, self-tapping screws, and wood screws, and are suitable for light-duty assembly in household appliances, furniture, and electronic equipment. 
Screws can be classified by head type (pan head, countersunk head, semi-round head) and by material (carbon steel, stainless steel, copper, etc.). 
They are widely used in construction, machinery, automobiles, and household appliances to meet various fastening, anti-loosening, and anti-corrosion requirements.