ASME · ANSI / ASME B18.31.4M

ASME B18.31.4M Standard: Technical Requirements for Metric Threaded Rods (Studs)

Technical Regulation and Scope of ASME B18.31.4M

The ANSI/ASME B18.31.4M standard establishes stringent requirements for the geometric parameters and dimensional characteristics of metric series threaded rods (studs). This regulatory documentation covers products with a nominal thread diameter ranging from M1.6 to M56, including both coarse and fine thread pitches.

EV Group China provides expert support for the selection of fasteners compliant with this standard. The company's engineering staff emphasizes that the data presented in the specifications are for reference purposes and set the framework for the design of assemblies and mechanisms. It is important to note that not all sizes listed in the tables may be in mass production by specific manufacturers. To optimize procurement processes and ensure the precision of mating parts, engineers are advised to pre-coordinate the availability of specific lengths and strength classes with EV Group China's technical specialists.