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a system of strength classifications used for bolts, nuts, and screws manufactured to metric standards, standartsete poltide, mutrite ja kruvide korral kasutatavad tugevusklassid
tugevusklass . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/tugevusklass/1/est (13.07.2026)
