Professional production of welded wing nuts, butterfly nuts, yuanbao nuts and ox horn butterfly non-standard fasteners. Made of high-quality carbon steel and stainless steel, formed by stamping, forging and integral welding process. Ergonomic horn and butterfly structure allows manual tightening without tools, easy installation and disassembly. Welded base design can be directly welded and fixed for firm connection. Various styles of butterfly, yuanbao and ox horn type are available to meet different assembly and locking needs. We support non-standard custom size, thread pitch, appearance and structure according to drawings and samples. Galvanized, black oxide and other surface treatments are optional for anti-rust and corrosion resistance. Widely used in furniture hardware, mechanical fixtures, industrial equipment, pipeline assembly and daily hardware fastening. Factory direct wholesale, stable quality, support small batch customization and large batch supply.