DIN 9021 (1990-03)被替代
Washers With Outside Diameter Ca. 3 X Nominal Thread Diameter
出版：German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻
基本信息
標準編號： DIN 9021 (1990-03)
發布時間：1990/3/1 0:00:00
標準類別：Standard
出版單位：German Institute for Standardisation (Deutsches Institut für Normung)
標準頁數：0
標準簡介
Specifies requirements for produce Grades A and C washers with a large outside diameter, i.e. washers with an outside diameter approximately equal to three times the nominal thread diameter of bolts with which the washers are intended to be used. The preferred application of these washers is in assemblies of hexagon head bolts and nuts with widths across flats as specified in ISO 272.
