din-935参考标准资料

UDC621.882.32October 1987Hexagon slotted nuts and castle nutsDINwith metric coarse and fine pitch threadProduct grades A and B935Part 1Kronenmuttern:metrisches Regel-und Feingewinde:Produkt-Supersedes December 1983 edition.klassen A und BIn 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,18 mm,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.M 14 and M 22:see example of designationin 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 M100 hexagon slotted nuts and castle nuts,assigned to product class A(up to size M16)and product class B (for sizes above M16).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 DimensionsHexagon slotted nutsHexagon castle nuts(up to size M10)(size M12 or more)15°t030°mr=mOther dimensions as for left-hand illustration.m'=minimum wrenching height.The bottom of the slots,at the manufacturer's discretion,may be rounded or chamfered.Hexagon slotted nuts and castlenuts may be supplied with the slotted part threaded or unthreaded.The faces of that part may be rounded.Continued on pages 2 to 6117