GB/T 3229-2018 标准详情
GB/T 3229-2018
现行
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
Assembly tools for screws and nuts—Dimensions and torque testing of drive ends for hand and machine-operated screwdriver bits and connecting parts