DIN_935-3相关标准规范

UDC621.882.32October 1987Hexagon slotted nutsNwith metric coarse pitch threadProduct grade C935Part 3Kronenmuttern;metrisches Regelgewinde:Produktklasse CSupersedes December 1983 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 16 mm,18mm.21 mm and 34 mm as specified in ISO 272 shall be used instead of the previouswidths across flats 17 mm,19 mm,22 mm and 32 mm for thread sizes M10.M12.M14 and M22:see example of designationin clause 4.It is intended to omit the obsolescent widths across flats by 1 July 1992 at the latest.In this standard,this applies to widthacross flats 19 mm specified for M12.Dimensions in mm1 Field of applicationThis standard specifies requirements for M12 to M33 hexagon slotted nuts,assigned to product grade C.If,in special cases,nuts are to comply with specifications other than those given in this standard,e.g.regarding propertyclass,they shall be selected in accordance with the relevant standards.2 Dimensions150t030°r=2m'=minimum wrenching height.The bottom of the slots,at the manufacturer's descretion,may be rounded or chamfered.Hexagon slotted nuts may besupplied with the slotted part threaded or unthreaded.Continued on pages 2 to 4123