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See Chinese contents: QC/T 598-2022 QC/T 598-2022: Bearing face projection weld bolts
This document specifies the types, dimensions, and technical conditions of bearing face projection weld bolts for automobiles. This document is applicable to projection welding bolts of three types of bearing face welding joints of type A and C, which have thread specifications of M4 ~ M12/M12 x 1.25, as well type B, which has specification of M5 ~ M10/M10 x 1.25.
