Crafted from high-quality carbon steel, these intermediate hex double end studs fully comply with GB901 standard, covering fully threaded studs, adjusting connecting studs and reducing stud bolts. The unique middle hexagonal structure allows easy gripping with wrenches, enabling efficient installation, precise positioning and secure locking—eliminating slippage during assembly. Precisely rolled threads feature clear tooth profiles, ensuring tight fitting with nuts and excellent anti-loosening performance even under vibration. Boasting good toughness, high load-bearing capacity and wear resistance, these studs are ideal for mechanical equipment connection, pipeline fixing, fixture assembly, engineering structure fastening and height adjustment scenarios. Available in complete specifications, including standard and custom reducing sizes to meet diverse connection needs between different thread diameters. Each product undergoes strict dimensional inspection and thread quality testing to ensure consistent performance and reliable structural integrity. Factory direct supply with sufficient stock supports bulk wholesale and long-term cooperative supply, providing cost-effective, durable and versatile fastening solutions for industrial, mechanical and engineering applications.