This standard specifies the type, size, and technical conditions of hexagonal conical magnetic screw plugs. This standard applies to automotive hexagonal conical magnetic screw plugs with thread specifications of NPT3/8~NPT1¼;
QC/T 884-2011 Referenced Document
GB/T 12716 Pipe threads with the thread angle of 60 degrees where pressure-tight joints are made on threads *, 2011-12-30 Update
GB/T 3103.1 Tolerances for fasteners--Bolts,screws,studs and nuts
GB/T 5779.1 Fasteners-Surface discontinuities-Bolts,screws and studs for general requirements