Introduction and Application of Carriage Screws

Carriage bolts are divided into large half round head carriage bolts (corresponding to standards GB/T14 and DIN603) and small half round head carriage bolts (corresponding to standards GB/T12-85) according to their head size. Carriage bolt is a type of fastener consisting of a head and a screw (a cylindrical body with external threads), which needs to be matched with a nut and used to tighten and connect two parts with through holes. Carriage bolt refers to a round head square neck screw.

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.

Materials: Carbon steel, Q235, 45 # steel, stainless steel

Nominal diameter: 5mm -20mm

Length: 15mm --300mm

Surface treatment methods: galvanizing, chrome plating, copper plating, surface blackening

Specification for stainless steel round head square neck bolts (carriage bolts): German standard DIN603

Specification for stainless steel small round head square neck carriage bolts: National standard GB/T12-85

Specification for stainless steel round head square neck carriage bolts: National standard GB/T14-8

Carriage bolts are fasteners used to connect and secure mechanical equipment components. It is composed of screws, nuts, and washers, usually made of high-strength alloy steel, and processed to ensure its strength, corrosion resistance, and rust resistance.

2. Applications in the field of machinery

Carriage bolts are commonly used in the field of machinery, such as heavy-duty equipment, excavators, construction machinery, pneumatic and hydraulic equipment, etc. In the field of machinery, carriage bolts play a role in connecting and fixing mechanical components, and they must withstand the influence of factors such as high strength, high pressure, and high friction.

3. Applications in the field of shipbuilding

In addition to the mechanical field, carriage bolts are also widely used in shipbuilding. In the shipbuilding industry, carriage bolts are used to connect, fix, and support various equipment, pipelines, and ship structures. The requirements for corrosion resistance, strength, and safety of carriage bolts in this industry are very high to ensure the safety and long-term performance of the entire ship.

Carriage bolts are also an important fastener in the automotive industry, widely used for fixing components such as automotive engines, steering systems, braking systems, and suspension systems. Carriage bolts in the automotive industry typically have characteristics such as corrosion resistance, high strength, high temperature, and high pressure to meet the strict requirements of the automotive industry.

In summary, carriage bolts are widely used in various fields such as machinery, ships, and automobiles. As an important fastener, the performance and reliability of carriage bolts are directly related to the safety and performance of equipment and machinery. Therefore, regardless of the field, it is crucial to choose the carriage bolts that are suitable for oneself.