Flat head and flat round head bolts are mainly used for riveting places of non-metallic materials such as metal plates or leather products, white canvas, wood and so on. Large flat head bolt is used for riveting place of non-metallic material. Half space central bolt is used for riveting place with small load. The key point of headless bolt is the riveting place of non-metallic material. Hollow bolt is light in weight and weak in head, so it is used for riveting place of nonmetal material with small load. Tubular bolt is used for non-metallic riveting place without load. The key of the sign plate bolt is to rivet the factory name plate on the equipment, machinery and equipment. Pull rivet is a kind of single and double-sided riveting bolt with aluminum iron open core pulling rivet, but it must be riveted by using common tools such as riveting gun (manual, electric and movable). This kind of bolt is very suitable, and it is troublesome to select the riveting place of general bolts (which must be riveted from both sides), so it is widely used in engineering construction, cars, ships, airports, equipment, household appliances, furniture and other commodities. Among them, the open mouth flat round head rivet is the most widely used, the countersunk head rivet is suitable for the riveting place which must be smooth, and the closed rivet is suitable for the single drum rivet, which is required to be riveted with high load and certain sealing characteristics.

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