This standard specifies the types, dimensions and technical conditions of welded round nuts. This standard applies to automotive welded round nuts with thread specifications M4 to M12 and mechanical performance level 8.
QC/T 867-2011 Referenced Document
GB/T 196 General purpose metric screw threads--Basic dimensions
GB/T 197 General purpose metric screw threads—Tolerances*, 2018-03-15 Update
GB/T 3098.2 Mechanical properties of fasteners.Nuts*, 2015-12-10 Update
GB/T 3103.1 Tolerances for fasteners--Bolts,screws,studs and nuts