• 

  Bolts

  Hex head bolts Hex socket head cap screws Grade: 8.8, 10.9, 12.9
• 

  Nuts

  Heavy hex nuts, structure nuts ASTM A194, JIS 1186, ISO 4032, ect. Class F8T, 10T, 8, 10, ect.
• 

  Studs

  Alloy steels ASTM A193/A320 B7, B7M, B16, L7, L7M, L43
• 

  Thread Bars

  Stainless steel DIN 975, DIN976 Class 8.8, 10.9, 12.9
• 

  Tapping/Double End Studs

  Precipitation hardened stainless steel ASTM A453 Grade 660 B8, B8M, B8T (Class 1 and Class 2), B6
• 

  Washers

  Spring washers, flat washers Heavy washers With any grade

Ningbo Dongxin High-Strength Nut Co., Ltd. was established in 1992, located in Ningbo, China. 

Our company mainly produce high strength fasteners. We always put quality in the first place, with the continuous development of Dongxin, Dongxin has a good reputation in the fastener industry of Oil Field, Petrochemical Industry, Heavy Engineering Industry, Construction Industry and Wind Power Industry. 

We have been certified by API-20E, PED, CE-EN 14399, CE-EN 15048 and ISO 9001-2015.