QC/T 326-2013: Translated English of Chinese Standard. (QCT 326-2013, QC/T326-2013, QCT326-2013): Coding rules for automotive standardized parts
https://www.chinesestandard.net, 2018年3月30日 - 32页
This Standard specifies the coding rules for automotive standardized-parts. This Standard applies to the development, design, manufacture, purchase, distribution, etc. of automotive vehicles, motorcycles and parts.
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automotive standardized automotive standardized-parts Change code chromium Circlips coarse thread Regular Code a Standard code of product coil spring lock cone connectors Cross recessed pan digits electroplated end Regular thread F Type fine thread Regular Flared couplings galvanized iridescent passivation GB/T head tapping screws Hexagon head bolt hexagon nuts Hexalobular socket pan industry standard major dimensional parameter nuts with flange Plain washers Prevailing torque type product of variety projection welding properties of fasteners property class property or material QC/T Regular coarse thread Regular fine thread relatively fine thread rod length screw Steel screw thread screws Cross recessed screws for plastic sequential number set screws Single coil spring socket set specification code spring lock washer Standard used Product standards are published Surface treatment code Table B.1 continued thread code thread Regular coarse thread Regular relatively thread specification treatment as EXAMPLE Type C Type type code Type F variety code weld nuts Weld stud