Professional processing and sales: high strength DIN916K concave end roll tight flower set |12.9 grade high strength fastening screws | a fine tooth concave end tight set, concave end hexagon socket set, concave DIN916 end knurled locking, 304 inner hexagon socket end tight set, DIN916 within the hexagonal concave end tight set, stainless steel concave end roll tight flower set.

Shanghai Hong metal products Co., Ltd. is an upscale fastening parts as the core, the specialty is engaged in the sale of cold pier tight firmware, pressing fasteners, pressure riveting fastening piece and customized non-standard parts enterprises. Production and operation of products up to thousands of species, including DIN, ANSI, BS, ISO and JIS, GB, standard and non-standard products. Materials involve carbon steel, alloy steel, stainless steel, copper and so on; kinds of products including various types of screws, bolts, nuts, China our, pin and so on.

Anti loose nut fastening, fastening end tight set ANSI (concave, flat end tip at the end of the tube, and the concave end knurling, etc.); metric (concave end, flat end tip end column concave end knurling, etc.); national standard; flower color (welding nut, K hat, cap, hexagon flange nuts, nylon lock nuts, cap nuts, nuts, butterfly nuts, round nuts, square nuts, etc.); precision screws (small screws, electronic screws, furniture screws, toys, screws, etc.); American inside and outside hexagon bolts, screws, screws, nuts, metric hex socket screws, screws, nuts, welcome new and old customers call inquiries!