What Is a Carriage Bolt?
Carriage bolts are divided into large round head carriage bolts (corresponding to standard GB / T14 and DIN603) and small round head carriage bolts (corresponding to standard GB / T12-85) according to head size. A carriage bolt is a type of fastener consisting of a head and a screw (a cylinder with an external thread). It needs to cooperate with a nut to fasten two parts with through holes.
Carriage bolt
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- Carriage bolts are divided into large round head carriage bolts (corresponding to standard GB / T14 and DIN603) and small round head carriage bolts (corresponding to standard GB / T12-85) according to head size. A carriage bolt is a type of fastener consisting of a head and a screw (a cylinder with an external thread). It needs to cooperate with a nut to fasten two parts with through holes.
- A carriage bolt is a round head square neck screw.
Generally speaking, bolts are used to connect two objects, usually through a light hole, and need to be used in conjunction with a nut. A single one does not have a connection function. The tool is generally a wrench. The head is mostly hexagonal, etc., and is generally larger. The carriage bolt is applied in the slot. The square neck is stuck in the slot during the installation process, which can prevent the bolt from rotating, and the carriage bolt can move in parallel in the slot. Because the head of the carriage bolt is round, there is no design of cross-slots or inner hexagons and other available power tools, and it can also play an anti-theft role in the actual connection process.
- Material: carbon steel, Q235, 45 # steel, stainless steel
- Nominal diameter: 5mm--20mm
- Length: 15mm--300mm
- Surface treatment method: galvanized, chrome-plated, copper-plated, surface blackened
- Stainless steel round head square neck bolts (carriage bolts) specification: German standard DIN603
- Specification for stainless steel small round head square neck carriage bolts: GB / T12-85
- Specification for stainless steel big round head square neck carriage bolt: GB GB / T14-8