Ningbo Zhenhai Guisi Zhaoyang Hardware Screw Factory is located in a beautiful coastal city-Ningbo. The factory was established in 1992 and is a leading manufacturer and supplier. Main products: hex head bolt, heavy hex bolt, hex socket countersunk head bolt, hex socket button head bolt, hex socket fillister head bolt, flat countersunk square neck bolt, carriage bolt, guardrail bolt, hub bolt, cement bolt, square bolt, T-head bolt, stud, drive shaft bolt, stainless steel bolt and non-standard bolt. Standard: DIN, ANSI, GB, ISO, AS, BS, non-standard. Grade: 4.8/5.8/6.8/8.8/10.9/12.9; 2/5/8. Size: M5-M24; 1/4inch-1inch. Length: 10mm-270mm; 1/2inch-10inches. Finish: self-colour, parkerising, black, zinc plated, hot dip galvanizing, dacromet. We warmly welcome customers home and abroad to visit our website and email us to discuss business cooperation.