GOST 16817-1971 Sand and metal moulds for determination of linear shrinkage of non-ferrous metals and alloys. Design and dimensions. Technical requirements
GOST 7798-1970 Hexagon bolts, product grade B. Construction and dimensions
GOST 7805-1970 Hexagon bolts, product grade A. Construction and dimensions
GOST 16817-1971 history
1971GOST 16817-1971 Sand and metal moulds for determination of linear shrinkage of non-ferrous metals and alloys. Design and dimensions. Technical requirements