Carbon Steel Grade 8.8 Grade10.9 Hexagon Hex Head Bolt DIN931/ISO4014 Carbon Steel Hexagon Head Flange Bolt

Bolt: Machine part, cylindrical threaded fastener with nut. A type of fastener consisting of a head and a screw (a cylinder with external threads) that is fitted with a nut for fastening two parts with through-holes. This type of connection is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection. According to the thread tooth type is divided into coarse teeth and fine teeth two categories, coarse teeth in the bolt logo does not show. Bolts are divided into grades 4.8, 8.8, 10.9 and 12.9 according to the performance grade. Bolts above 8.8 (including 8.8) are made of low-carbon alloy steel or medium carbon steel and treated with heat treatment (quenching and tempering), generally known as high strength bolts, and bolts below 8.8 (excluding 8.8) are generally known as ordinary bolts

Products Details

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.Countersunk heads are generally used where the surface is required to be smooth after connection because countersunk heads can be screwed into parts. Round heads can also be screwed into parts. The tightening force of square head can be larger, but the size is large. In addition, in order to meet the needs of locking after installation, there are holes in the head and holes in the rod, which can make the bolt not loose when it is vibrated. Some bolts have no thread of the smooth rod to do fine, called the waist bolt. This kind of bolt is good for coupling under varying forces. There are special high-strength bolts on the steel structure, and the head will be larger and the size will change. In addition, there are special uses: T-groove bolts, the most used on the machine tool fixture, special shape, both sides of the head to cut off. Anchor bolts, used to fasten machines to the ground, come in many shapes. U-bolts, as described above. And so on. There are special studs for welding. One end has thread and the other end has no thread. They can be welded to the parts and the other side directly screws the nuts
Product name Hex bolt 
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

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