We supply high-strength carbon steel middle hexagon double end studs, standard GB901 fully threaded studs, adjustable connecting screws and reducing stud bolts. Adopting integrated forging and turning process, the middle hexagon design is convenient for wrench clamping and installation, easy for positioning, locking and length adjustment. Full thread design ensures large adjustment range and strong bearing capacity; reducing type studs support different diameter matching at both ends to meet special assembly requirements. Made of high-quality carbon steel, the studs feature high tensile strength, good toughness and stable mechanical performance. Surface can be customized with black oxide, galvanized and other treatments for rust and corrosion resistance. Strictly produced in accordance with GB901 standard, precise thread pitch, smooth assembly and firm connection. Widely used in mechanical equipment, mold fixtures, engineering machinery, cabinet assembly, pipeline connection and adjustable support occasions. Conventional specifications in stock, support custom length, diameter, pitch and non-standard reducing stud processing. Factory direct sales, bulk wholesale available, providing reliable threaded connection and adjustable fastening solutions.