EN 4072 : 2016 COR 2017现行
AEROSPACE SERIES - SCREWS, 100 DEGREES COUNTERSUNK NORMAL HEAD, OFFSET CRUCIFORM RECESS, CLOSE TOLERANCE SHANK, SHORT THREAD IN TITANIUM ALLOY, ALUMINIUM IVD COATED - CLASSIFICATION: 1100 MPA (AT AMBIENT TEMPERATURE)/425 DEGREES C
出版：Comite Europeen de Normalisation
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