This document specifies the type, size, technical conditions of double end studs bm = 1.25d. This document is applicable to double end studs for automobiles, whose thread at the screw-in base end is ordinary coarse thread, transition fit thread, ordinary fine thread (thread specification is greater than M16), AND the thread at the screw-in nut end is ordinary coarse thread and ordinary fine thread.
Basic Data
Standard ID
QC/T 870-2022 (QC/T870-2022)
Description (Translated English)
Double end studs bm=1.25d
Sector / Industry
Automobile and Vehicle Industry Standard (Recommended)
Classification of Chinese Standard
T33
Word Count Estimation
12,186
Date of Issue
2022-04-08
Date of Implementation
2022-10-01
Issuing agency(ies)
Ministry of Industry and Information Technology
Summary
This standard specifies the type, size and technical conditions of double-ended stud bm=1.25d. This standard is applicable to double-headed automobiles whose screw-in base end thread is ordinary coarse thread, transition fit thread and ordinary fine thread (thread size greater than M16), and the screw-in nut end thread is ordinary coarse thread and ordinary fine thread stud.
