SPEC Products Corp., located in Tainan, Taiwan, manufactures a diverse array of... SPEC Products Corp., located in Tainan, Taiwan, manufactures a diverse array of fastening solutions and precision components for both industrial and automotive clients. Their extensive product catalog includes essential items like nuts, screws, bolts, washers, and pins, alongside specialized offerings such as machined and turned parts, reheaded and forged head bolts, various assemblies (e.g., nut/washer, sems, stamping), cold-formed products, flange screws and nuts, stainless steel screws, round head and shoulder bolts, clinch and double-ended screws, weld nuts and studs, blind and miniature rivets, out-center pins, T-bolts, rivet nuts, tamper-proof screws, and a selection of square, clinch, and licensee fasteners.