Description:1. The carriage bolt is designed with a round head, a square neck and a Q235 carbon steel material. It is used in the groove. The square neck is conveniently stuck in the groove during the installation process and can prevent the bolt from rotating during installation.2. Due to the head, there is no groove type that can be used with a power assisting tool. It can also be hidden during actual use to prevent disassembly.3. Precision-forged, acid and alkali resistant, corrosion-resistant and resistant to oxidation.4. The thread is smooth and flat, and the screw teeth are stronger.5. Used widely in the home and office appliances, communication equipment, ship assembly, and other machinery industry.