NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 3229-2018
Assembly tools for screws and nuts—Dimensions and torque testing of drive ends for hand and machine-operated screwdriver bits and connecting parts 螺栓螺母用装配工具-手动和机动螺刀头的传动端和连接部件的尺寸及扭矩试验
Issued Date:2018
Implemented Date:2019-7-1
Issued by:
The Standardization Administration of the People's Republic of China
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