1.1 This standard specifies the type, size, technical requirements, reference standard and number of 12-point head heat resistant nuts for automobiles. 1.2 This standard is applicable to 12-point head heat resistant nuts for automobiles, which have thread specifications of M5 ~ M12, material properties abbreviated as SB, product grade of TA, working temperature below 700 °C.
Basic Data
Standard ID
QC/T 1103-2019 (QC/T1103-2019)
Description (Translated English)
12-point head heat resistant nuts
Sector / Industry
Automobile and Vehicle Industry Standard (Recommended)
Classification of Chinese Standard
T31
Word Count Estimation
6,616
Date of Issue
2019-08-02
Date of Implementation
2020-01-01
Regulation (derived from)
Natural Resources Department Announcement No. 7 of 2019
