din-1587-gajki参考标准资料

DIN 1587.Tanka konnaykoBaa wecTnrpaHHaa Bbicokaa,aHanor rOCT 11860UDC621.882.31June 1987Hexagon domed cap nuts丽1587Sechskant-Hutmuttern,hohe FormSupersedes April 1977 edition.In keeping with current practice in standards published by.the International Organization for Standardization (ISO),a commahas been used throughout as the decimal marker.The new widths across flats as specified in ISO 272 have been adopted in addition to the previous widths across flats forthread sizes M10.M12,M14 and M22.The new widths across flats 16mm.18mm,21 mm and 34mm shall be used instead of the previous widths across flats17 mm,19 mm,22 mm and 32 mm;see example of designation in clause 4.It is intended to omit the obsolescent widths across flats by 1 July 1992 at the latest.Dimensions in mm1 Field of applicationThis standard specifies requirements for M4 to M24 coarse and fine pltch thread hexagon domed cap nuts assigned toproduct grade A or B.If,in special cases,nuts are to comply with specifications other than those given in this standard,e.g.regarding propertyclass,these shall be selected in accordance with the relevant standards.2 DimensionsFor slzes up to M10For size M12 or more(with thread run-out or thread undercut,at the manufacturer's discretion)(with thread undercut)15t030°Other dimensionsas for left-handiilustration.m'=minimum wrenching height.Continued on pages 2 to 5244