KS B ISO 7415-2008 Plain washers for high-strength structural bolting hardened and tempered《淬硬和回火的高强度结构栓接用平垫圈》.pdf

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2、r high-strength structural bolting, hardened and tempered 1984 1 ISO 7415, Plain washers for high-strength structural bolting, hardened and tempered , . 1 M12 M36 (large series) 6 . 2 . . ( ) . KS B ISO 3269, ISO 4759 3, Tolerances for fasteners Part 3： Plain washers for bolts, screws and nuts Produ

3、ct grades A and C ISO 4775, Hexagon nuts for high-strength structural bolting with large width across flats Product grade B Property classes 8 and 10 3 1 KS B ISO 7415:2008 2 1 ： mm , d M12 M16 M20 (M22)aM24 (M27)aM30 M36 14 18 22 24 26 30 33 39 d1 14.43 18.43 22.52 24.52 26.52 30.52 33.62 39.62 25.

4、7 32.4 40.4 42.4 48.4 54.1 58.1 70.1 d2 27 34 42 44 50 56 60 72 3.1 3.1 3.1 3.4 3.4 3.4 3.4 3.4 H 4.6 4.6 4.6 4.6 4.6 4.6 4.6 4.6 a( ) . 4 2 (HRC)a35 45 dM20 d1： A, h： 2 IT 16 d M20 d2： C, h： IT 17 ISO 4759 3 (black oxide)b c c c KS B ISO 3269 ISO 4775 a 26 HRC . b . c , . 5 d M16 . KS B ISO 7415 16 6 . 135513 7017 (02)60094114 (02)600948878 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS B ISO 7415:2008KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Plain washers for high-strength structural bolting, hardened and tempered ICS 21.060.30