DIN EN ISO 6789:2003 螺钉和螺母用装配工具.手动转矩工具.设计一致性试验、质量一致性试验和重新校准程序的要求和试验方法
Assembly tools for screws and nuts - Hand torque tools - Requirements and test methods for design conformance testing, quality conformance testing and recalibration procedure (ISO 6789:2003); German version EN ISO 6789:2003