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A carriage bolt, also known as a coach bolt, is designed with a distinctive dome-shaped head and a square neck or shoulder under the head. The flat head of the 3/8 inch carriage bolt, as the name suggests, has a flat surface that sits flush against the mating surface, offering a clean and streamlined appearance. This design is particularly useful when a smooth finish is required, preventing any protrusions that might interfere with the overall aesthetics or function of the project.

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HEBEI YUETONG FASTENERS countersunk screw