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UDC621.882.54October 1987Conical spring washers瓜for bolt/nut assemblies6796Spannscheiben fur SchraubenverbindungenSupersedes July 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.Dimension in mm1 Scope and field of applicationConical spring washers covered in this standard are deemed to be spring washers designed for use for boit/nut assembliesinvolving bolts of property classes 8.8 to 10.9 as specified in ISO 898 Part 1.They are intended to counteract theeffect of setting which results in bolt/nut assemblies 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.2 Dimensions回Φ2T12MassNominaldd2(7.,85kg/dm3)Forsizeper 1000 units.threadH14h143max.1)min.2)inkg,≈size2220.40.60.50052.540.50.720.610032.5343.2060850.720.143,5378081060.920.253.5431.31.12120,.38111551.350.6956,411.51,71,437411.752325384182.62.243.131010.5232.53.22.86.4510123953.4312.4121415353.54.654.0421.614161395.2545830.46145585.0838.918456.45.648.82249557.056.1563.54567.756.7792.92428658357.31133031709.2170301)Maximum size at delivery.2)Minimum size after test for permanent set as specified in DIN 267 Part 26.3)See DIN 1544 for limit deviations for s not exceeding 6 mm and DiN 1543 for s exceeding 6 mm.4)Test values for the spring force test as described in DIN 267 Part 26 have not as yet been specified for thisnominal size.Continued on page 2185
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