BS ISO 6624-2:2016 specifies the essential dimensional features of half keystone rings made of cast
iron, types HK, HKB and HKBA, having nominal diameters from 38 mm up to, and including, 160 mm,
used in reciprocating internal combustion piston engines for road vehicles and other applications.Cross References:ISO 6621-4ISO 1101ISO 6621-1ISO 6621-2ISO 6621-3ISO 6621-5ISO 6622-1ISO 6622-2ISO 6623ISO 6625ISO 6626-1ISO 6626-2ISO 6626-3ISO 6627All current amendments available at time of purchase are included with the purchase of this document.