HETAI is manufacturing the binding screws. A binding screw (also known as a Chicago screw, sex bolt, or bookbinding screw) is a two-piece fastener consisting of a threaded female sleeve and a matching male screw.
Designed to clamp multiple layers together through a pre-drilled hole, it creates a clean, flush finish on both sides. Binding screws are widely used for joining sample swatches, leather goods, books, photo albums, menus, architectural signs, and hardware assemblies where quick manual binding or repeated disassembly is required.
How binding screws are made? Watch the video below to see how HETAI manufactures binding screws:
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