Insert Screws | Reliable Embedded Fastening Solutions

Insert screws are fastening components designed for secure threaded connections in non-metal substrates such as plastics, rubber, wood, and composite materials. By incorporating external knurling, threads, barbs, or other locking features, the screw can be firmly embedded into the base material to create a durable metal-thread interface. Compared with conventional nuts or direct tapping, insert screws provide a practical fastening solution where installation space is limited while improving connection reliability and assembly flexibility.

To meet different substrate characteristics and assembly requirements, insert screws can be manufactured with a variety of external profiles, including straight knurling, diamond knurling, helical knurling, barbed structures, and other anti-rotation designs. These features are engineered to improve resistance to pull-out and rotational forces after installation. Internal threads are available in metric and imperial standards, with options for different thread lengths, body dimensions, and head configurations.

Depending on the application, materials can include carbon steel, stainless steel, alloy steel, and other suitable grades. Surface treatments such as zinc or nickel plating can also be specified to enhance corrosion resistance and meet appearance requirements. Thread specifications, dimensions, tolerances, and special structural features can be customized according to customer drawings, making insert screws suitable for OEM/ODM projects as well as high-volume production.

Insert screws are widely used in automotive components, home appliances, electronic equipment, injection-molded plastic parts, furniture, machinery, and composite-material products. In plastic housings, panels, and structural components, for example, insert screws provide a durable metal-thread interface for secure fastening while allowing convenient assembly, disassembly, and maintenance.

With integrated manufacturing capabilities covering material selection, cold heading, CNC machining, thread forming, surface treatment, and quality inspection, we support customers in developing insert screw solutions tailored to their application requirements. Our goal is to deliver consistent quality, reliable fastening performance, efficient assembly, and competitive overall manufacturing costs.