This standard specifies the types, dimensions, and technical conditions for welded hexagonal nuts. This standard is applicable to automotive welded hexagonal nuts used with bolts with thread specifications of M4~M16 and M10×1.25~M16×1.5 and a mechanical performance grade of below 8.8.
QC/T 860-2011 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