DIN127

DIN32787■279444600027537■UDC621.882.54DEUTSCHE NORMOctober 1987Spring lock washersDINwith square ends or tang ends127Federringe;aufgebogen oder glatt mit rechteckigem QuerschnittSupersedes December 1970 edition.In keeping with current practlce In standards publlshed by the Internatlonal Organlzatlon for Standardlzatlon (ISO),a commahas been used throughout as the decimal marker.It Is recommended that DIN 128 be used instead of the present standard,which is to be withdrawn by 1 January 1992(see Explanatory notes).Dimensions in mm"A'8 BunuON1 Scope and field of applicationSpring lock washers covered in this standard are deemed to be spring washers designed for use with bolt/nut assemblies益Involving fasteners of property class 5.8 or less,as specified In IS0 898 Part 1.They are Intended to counteract theeffect of setting which results In bolt/nut assemblles working loose (see DIN 267 Part 26).They do not effectivelyprevent loosening of the assembly under varying radial load and are designed for use with short bolts predominantlysubject to thrust.]n2 DimensionsType A,with tang endsType B,with square ends(size3 and larger】Tang ends for type AWasher cross section (enlarged)Z60°aThe tang ends shall be produced to dimension without kinking by bending both ends in a zone extending one-tenthof the circumference from either end.The illustrations show spring fock washers for screws with right-hand thread,the position of the tang ends being viceversa for bolts with left-hand thread.Continued on pages 2 and 3Bouth Verlag ambH;Bertin,has the exclusive right of sale for German Slandards (DiN-Normun).03.66DIN 127 Engl.Price group 5Sales No.0105Copyright by the DIN Deutsches Institut Fur Normung B Ylon Mar041306:042013