Gangtong Zheli is China manufacturer & supplier who mainly produces DIN603 Stainless Steel A2-70 SS304 SS316 Carriage Bolt Mushroom Round Head With Square Neck Bolts with many years of experience. Hope to build business relationship with you. Carriage bolts are distinct from other types of bolts due to their unique features. They have a shallow mushroom-shaped head, and their shank is circular for most of its length, with a square section just below the head. This square section is what sets carriage bolts apart; it makes the bolt self-locking when inserted through a square hole in a metal strap or a round hole in wood. This design allows for easy installation using just a single tool, typically a spanner or wrench, which can be operated from one side. The head of a carriage bolt is typically low-profile and domed, and the squared section matches the diameter of the bolt shank, which is plain and unthreaded.

DIN603 Stainless Steel A2-70 SS304 SS316 Carriage Bolt , Mushroom Round Head With Square Neck Bolts