According to the force mode of connection, there are ordinary and reaming holes. Flange bolts for reaming holes are to be fitted to the dimensions of the holes and used when subjected to transverse forces. In addition, in order to meet the need of locking after installation, there are holes in the rod, which can make the bolt not loose when it is vibrated. Some flange bolts have no threaded smooth rod parts to do, called thin rod flange bolts. This flange bolt facilitates joint subjected to varying forces. Flange bolt is composed of hexagonal head and flange plate, its "support area and stress area word ratio" is greater than ordinary bolt, so this bolt can withstand higher preload, anti-loosening performance is also better, so it is widely used in automotive engines, heavy machinery and other products.   Handan Chang Lan Fastener Manufacturing Co., Ltd. formerly Yongnian Tiexi Changhe fastener factory was large-scale standard fastener manufacturer in Yongnian District. The company is located in standard fastener distribution center of Hebei Yongnian, covering an area of 3,050 square meters, was close to Tianjin Port and Qingdao ports, export is very convinedtly. The company has multi position cold heading machine, model 12b, 14b, 16b, 24b, 30b, 33b; has hot forging machine, model has 200 tons, 280 tons, 500 tons, 800 tons;Has a variety of supporting equipment, including rolling machine, rolling machine, oil press, etc. for bolts, nuts, double stud bolts , foundation bolts and complete product testing equipment. With an experienced technical research and development team, high-quality management personnel and spacious production environment.

Product name	Flange bolts
Brand	CL
Product model	M6-200
Surface treatment	Black、galvanized、Hot dip galvanized
Material	Carbon steel
Standard	DIN、GB
About the material	Our company can customize other different materials different specifications can be customized