Round head square neck bolt

Carbon steel、Stainless steel、355 35K 45# 40Cr 35CrMo 42CrMo Name Carriage bolt Cup Head Square Neck Bolts Round Head Square Neck Bolts Standard ASME B 18.5 JIS B 1171 GB /T 12 GB /T 14 DIN 603 Size M5～M64 1/4～4 Length 40mm～1500mm Grade 4.8 5.8 6.8 8.8 10.9 12.9 Material Carbon steel、Stainless steel、355 35K 45# 40Cr 35CrMo 42CrMo Surface black, zinc plated, color zinc, hot dipped galvanized, dacromet Description According to the head size, carriage bolts are divided into large semicircle head carriage bolts (corresponding to standard GB/T14 and DIN603) and small semicircle head carriage bolts (corresponding to standard GB/T12-85). Carriage bolt, a class of fastener consisting of a head and a screw (a cylinder with external threads), to be fitted with a nut for fastening two parts with a through hole. Construction operation technology A bolt is used to connect two objects, usually through a light hole, and needs to be used in conjunction with a nut. Tools usually use a wrench. Scope of application The carriage bolt is applied in the slot, the square neck is stuck in the slot during the installation process, which can be lifted to prevent the bolt from turning, and the carriage bolt can move parallel in the slot. As the head of the carriage bolt is round, there is no cross groove or hex socket, such as the design of available power tools, in the actual connection process can also play the role of anti-theft. Keywords: Round head square neck bolt