1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS B ISO 7416 KS B ISO 7416:2008 2008 12 11 http:/www.kats.go.krKS B ISO 7416:2008 : ( ) ( ) () () () ( ) : (http:/www.standard.go.kr) ： ： 2003 12 22 ： 2008 12 11 2008-0871 ： ： ( 025097274) (http:/www.kats.go.kr). 10 5 , . KS B ISO 7416:2008 Plain washers, c
2、hamfered, hardened and tempered for high-strength structural bolting 1984 1 ISO 7416, Plain washers, chamfered, hardened and tempered for high-strength structural bolting , . 1 M12 M36 (large series) 6 . 2 . . ( ) . KS B ISO 3269, KS B ISO 7411, 6 (ISO 888 ) C 8.8 10.9 KS B ISO 7412, 6 ( ) C 8.8 10.
3、9 KS B ISO 7414, 6 , 1 B 10 ISO 4759 3, Tolerances for fasteners Part 3： Plain washers for bolts, screws and nuts Product 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 KS B ISO 7416:2008 2 3 1 1 ： mm
4、 , d M12 M16 M20 (M22)aM24 (M27)aM30 M36 13 17 21 23 25 28 31 37 d1 13.27 17.27 21.33 23.33 25.33 28.52 31.62 37.62 23.7 31.4 38.4 40.4 45.4 50.4 54.1 64.1 d2 25 33 40 42 47 52 56 66 3.4 3.4 3.4 3.4 3.4 4.4 4.4 4.4 h 4.6 4.6 4.6 4.6 4.6 5.6 5.6 5.6 e 0.5 1 1 1 1 1 1 1 1.2 1.2 1.6 1.6 1.6 2.0 2.0 2.4
5、 c 1.6 1.6 2.0 2.0 2.0 2.4 2.4 2.8 a( ) . KS B ISO 7416:2008 3 4 2 (HRC)a35 45 d1： A d2： C h： IT 17 ISO 4759 3 (black oxide)b c c c KS B ISO 3269 KS B ISO 7411, KS B ISO 7412 ISO 4775, KS B ISO 7414 a 26 HRC . b . c . 5 d M16 . KS B ISO 7416 16 6 1 S . 135513 7017 (02)60094114 (02)600948878 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS B ISO 7416:2008KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Plain washers, chamfered, hardened and tempered for high-strength structural bolting ICS 21.060.30
