Products stud especially larger diameter screw, you can also head stud. General, is not called "stud" and called the "stud". The most common form of the stud is threaded at both ends, the middle light pole. The product attributes stud is manufactured in accordance with the standard of GB897-901 material: Q235, 45 #, 40Cr, 35CrMoA Q345D specifications: M3mm-M100mm, length can be customized according to user needs. Stud high strength material have 35 # 45 # 35CrMoA, 25Cr2MoV, 304,316,304 L, 316L, 2H, 2HM, B7, B7M, B16, B8, 8, B8M, 8M, widely used in power, chemical , refining, valves, railways, bridges, steel, automobile and motorcycle accessories, and other areas of other instructions, in the main large-scale equipment, installation accessories, such as endoscopy, mechanical seal seat, gear rack, which is used stud one end screwed into the main body, the other end of the belt accessories are installed nut attachment is frequent removal, thread wear or damage, stud replacement will be very convenient. 2, for the connection thickness, the length of the bolt is very long, with studs. The transaction description of "high quality and efficiency" is our customer service principle of "quality first, reputation first" is our aim. We hope that you and seek common development, hand in hand. We sincerely welcome new and old customers to guide, negotiate, common success!