DIN 603 Carriage Bolts from China Suppliers - Factory Direct Grade 4.8 to 12.9, Various Materials & Surface Treatments
Product Introduction
Generally speaking, bolts are used to connect two objects, usually through light holes, and need to be used in conjunction with nuts. They do not serve as a single connection. Tools usually use a wrench. The head is mostly hexagonal and generally larger. Carriage bolts are used in grooves, and the square neck is stuck in the groove during installation to prevent the bolt from rotating. Carriage bolts can move parallel in the groove. Due to the circular shape of the head of the carriage bolt, there is no design of a cross groove or an internal hexagon that can be used as an auxiliary tool, and it can also play a role in preventing theft during the actual connection process.
How to Use Carriage Bolt
Application scenarios of semi-circular head bolts
Half round head bolts are commonly used for hinged connections, including the following application scenarios:
Compared to ordinary bolts, half round head bolts have the following advantages and disadvantages.
OUR Advantages
However, half round head bolts also have some drawbacks:
Frequently Asked Questions
Carriage bolts are fasteners used to connect two objects through light holes in conjunction with nuts. During installation, their unique square neck gets stuck in a groove to prevent the bolt from rotating, allowing parallel movement within the groove.
Because the head of a carriage bolt is circular and lacks a cross groove or internal hexagon design, standard auxiliary tools cannot easily grip or turn it. This design feature helps prevent theft and unauthorized disassembly during the actual connection process.
They are commonly used for hinged connections. Typical application scenarios include mechanical equipment connections (like shafts and swing arms), structural connections (such as wall panels, ceilings, doors, and windows), and transmission system connections to withstand transmission forces.
The main advantages include the ease of making hinged connections, simple installation requiring only pliers without special tools, and higher strength compared to ordinary bolts of the same specifications to handle larger loads.
The drawbacks include difficulty in disassembly, which requires special tools and techniques, and a threaded part that is prone to damage, potentially limiting the bolt's reusability.