Square nut high strength 4.8 6.8 8.8 10.9 12.9 standard size Zinc Plain Square nut UNF UNC ANSI DIN557 A2 A4 70 80 manufacture wholesale price

1.RAW MATERIALS:Semi-Autic The raw materials are made by coiling, annealing, pickling, and wire drawing. The lower the content of Al and Cu, the better the performanceThe product is smooth and free of burrs, high-quality workmanship, fast and durable. 2.COLD HEADING:The principle of screw forming is to perform cold or hot multi-station upsetting according to the plastic deformation of the metal to meet the shape and size requirements of the required parts. It is characterized by less cutting or no waste, low cost, high efficiency, and high finish. Compared with cutting processing, its output has high strength. 3.THREAD ROLLING:The principle of thread rolling is to use the plasticity of metal to roll the formed semi-finished products to achieve the required thread specifications. The tooth rolling machines currently used by our company are flat reciprocating tooth rolling machines produced in Taiwan. With good accuracy and high efficiency, it is in the forefront of the domestic industry.

1. 25 kg bags or 50kg bags. 2. bags with pallet. 3. 25kg cartons or cartons with pallet. 4. Packing as customers’ request

YungChang (YC) is a fastener manufacture enterprise, major product includes bolts, nuts, crews, pins, anchors, hose clamp, and special customized, use high quality raw material which originate from imported or domestic large-scale steel factory, the production applies advanced ERP management system and flexible operation model. By its top-grade talent and first-class producing equipment, High quality, various item, different colour and excellent service. The capacity per year is over 30 thousands tons, which is the main manufacturer of high strength fasteners in China, supplying products to European Union, Southeast Asia, Africa , Japan, Korea, and American markets.