This standard specifies the type and size, technical requirements, test methods, inspection rules, marking, and packaging of hydraulic nuts with thread specifications of M24~M48 and their supporting high-strength studs, high-strength nuts, and high-strength washers. This standard is applicable to high-strength bolt connections on large and medium-sized mining machinery and equipment where anti-loosening requirements are required.
MT/T 913-2002 history
2002MT/T 913-2002 Hydraulic nuts and high-strength fasteners for coal mining machinery