In connection with DIN 1680 parts 1 and 2 this standard relates to the general tolerances and machine allowances of light metal alloy pressure die castings.
DIN 1688-4:1986 history
2014DIN CEN ISO/TS 8062-2:2014 Geometrical Product Specifications (GPS) - Dimensional and geometrical tolerances for moulded parts - Part 2: Rules (ISO/TS 8062-2:2013); German version CEN ISO/TS 8062-2:2013
1986DIN 1688-4:1986 Light metal alloy raw castings; pressure die castings; general tolerances, machining allowances