Precision Custom Fasteners from Wenzhou Riyi Standard Parts

Wenzhou Riyi Standard Parts is a reliable Chinese manufacturer focusing on custom non-standard fasteners, located in Wenzhou’s Binhai Economic Zone. Equipped with multi-station cold forging and CNC machining facilities, the factory delivers full-process production from raw material drawing, cold heading, heat treatment to surface finishing. Its products serve automotive, railway, marine, electronics and mechanical equipment sectors, with exports shipped to global industrial clients.

Among its flagship custom parts is the Hex Flange Double-Ended Stud. This stud combines a hexagonal flange section and double-end threads. The flange spreads clamping pressure evenly to protect mating surfaces, while double-side threaded segments allow stable assembly in confined structures. It performs well under vibration and heavy load, widely adopted for equipment frames and flange joints.

Another core item is the Round Head Shoulder Bolt. Featuring a smooth unthreaded shoulder under the round head, it delivers precise positioning and spacing control. The shoulder can act as a pivot or guide shaft for rotating components. It is commonly used for jigs, fixtures and automation assemblies, supporting repeated disassembly without losing positioning accuracy.

For special connection requirements, the factory supplies the Stainless Steel Cylindrical Connector with Threaded Cross Holes. This stainless cylindrical body has perpendicularly drilled threaded cross holes, enabling right-angle locking between components. The cross-thread design simplifies hidden assembly and offers good corrosion resistance, suitable for machinery panels and modular equipment structures.

Riyi accepts custom drawings and samples, with flexible material choices including carbon steel, alloy steel and stainless steel. Every batch undergoes strict dimensional and thread inspection to meet ISO, DIN and customer-specified standards. Whether small-batch prototyping or mass manufacturing, Wenzhou Riyi Standard Parts provides cost-effective fastening solutions for worldwide engineering buyers.