Carbon steel 10B21 Flat Head Square Neck Carriage Bolt For T89 T90 Elastic

Product Specification

Stainless Steel Flat Head Square Neck Carriage Bolt For T89 T90 Elastic Pressure Guide Plate Strength:8.8 Grade

products Description:

   Carriage bolt, also known as a coach bolt or round head square neck bolt, is a type of threaded fastener with a distinctive domed head and a square or rectangular shoulder section just below the head. Carriage bolts are typically used to fasten wood or metal components together. Here is a description of a carriage bolt:

Construction: Carriage bolts are usually made of steel, stainless steel, or other alloy materials.They consist of three main parts: a round, domed head with a smooth, slightly curved top surface; a threaded shank that extends from the head; and a square or rectangular shoulder section located directly below the head.

Head Design: The domed head of a carriage bolt is typically larger in diameter than the threaded shank. It provides a smooth, finished appearance and offers a bearing surface when installed.The top surface of the head is usually flat or slightly rounded, making it suitable for applications where a flush or low-profile finish is desired.

Square Neck: One distinctive feature of a carriage bolt is the square or rectangular neck section just below the head. The square neck is designed to fit into a corresponding square hole or slot in the material being fastened, preventing the bolt from rotating during installation. This feature allows for easy one-person installation, as the bolt can be held in place while the nut is tightened on the threaded end.

  Ordinary standard square neck bolt such as DIN603 is half round head or oblate head, the head of this square neck bolt produced by our factory is flat, so it is called flat head square neck bolt.

  The carriage bolt is applied in the slot, and the square neck is stuck in the slot during the installation process, and can only move parallel in the slot, which can prevent the bolt from turning. Because the head of the carriage bolt is round, there is no available assist tool such as a cross slot or hex, and it can also play a role in preventing theft. This type of carriage bolt produced in our factory is used in elevator rails.

inventory:

As the flat head square neck bolts M12*35 and M14*40 used with the elevator rail press plate T89 T90 are more commonly used, our company always has stock, usually they are 8.8 environmental protection blue and white zinc, if there are other specifications can be drawn or sample production and processing.

A Flat Head Square Neck carriage bolt is a type of bolt that has a flat, countersunk head and a square-shaped neck under the head. This design allows the bolt to sit flush against the surface when installed and the square neck helps to lock the bolt in place and prevent it from turning.

Here are some key features and uses of a Flat Head Square Neck carriage bolt:

1. Flat Head: The flat head sits flush against the surface when the bolt is installed. This makes it suitable for applications where a protruding head is not desired.
2. Square Neck: The square-shaped neck under the head fits into a square hole in the nut or washer, preventing the bolt from rotating once tightened. This provides a secure connection and helps keep the bolt in place.
3. Carriage Bolt Design: Carriage bolts are designed to be used in applications where a tight, secure connection is needed. The square neck helps to lock the bolt in place and resist vibration or loosening over time.
4. Materials: Flat Head Square Neck carriage bolts are typically made from steel or stainless steel, depending on the application and environment.
5. Applications: These bolts are commonly used in woodworking, furniture making, and other applications where a secure, flush-mounted bolt is desired. They are often used with washers to distribute the clamping force over a wider area.

When installing a Flat Head Square Neck carriage bolt, it is important to ensure that the square neck fits properly into the nut or washer to prevent rotation. Additionally, the bolt should be tightened to the appropriate torque to ensure a secure connection.