Ningbo Ruifeng Hardware Products Co., Ltd. is equipped with advanced imported cold-heading machines, imported full pneumatic tapping machines with high accuracy, blind hole and round nut tapping machines, full automatic nylon check nut combined machines, and many double machining equipments and equipments for testing products' mechanical performance. On the premise of insuring quality, our good equipments can, through cold-heading, form various fasteners similar to nuts, which are in the shape of hexagon, square, round, cap, or in combined or complicated shapes, and whose across flats (external diameter) range from 4mm to 30mm, and width from 1mm to 60mm

Main products of Ningbo Ruifeng:
Standards: GB, DIN, JIS, ANSI/ASME/IFI, Metric system (M, MF), American system (UNC, UNF), British system (BSW, BSF) screw thread. Products are hexagon nuts, nylon check nuts, all-metal check nut, flange nuts, cap nuts, square nuts, hexagonal steel weld nuts, square weld nuts, weld round nuts, round nuts, head-hooking nut, chain rollers, socket wrenches, bearing rings, HP oil manifold metal junction tubes, ignition plug metal pieces, in-built metal expansion and so on. (DIN934. DIN439. DIN985. DIN982. DIN1587. DIN917. DIN6923. DIN929. DIN928. DIN562. DIN557. UNI5587. ISO4032. ISO4035. JIS B 1181. JIS B 1196. JIS B 1190. JIS B 1163. U-Nuts. Conical Nuts. K-Nuts. DIN125. DIN126. ANSI/ASME. IFI. NM. NE. NTM. NTE. GB52. GB51. GB55. GB53. GB6170. GB6172. GB6175. GB889. GB923. GB6177. GB39. GB13681. GB3680A. GB97. GB96)

We also use m stainless steel and copper to manufacture the above-stated products, and according to drawings and samples provided by customers, we can also manufacture special nuts and highly difficult non-standard articles using stainless steel, copper and carbon steel, or provide OEM-labeling processing services. Products are

We hope all our customers can keep on supporting and using our products, and cooperation with morecustomers is desired.