1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS B ISO 7412 6 ( ) C 8.8 10.9KS B ISO 7412:2008 2008 12 11 http:/www.kats.go.krKS B ISO 7412:2008 : ( ) ( ) () () () ( ) : (http:/www.standard.go.kr) ： ： 2003 12 22 ： 2008 12 11 2008-0871 ： ： ( 025097274) (http:/www.kats.go.kr). 10 5 , . KS B ISO 7412:2008
2、6 ( ) C 8.8 10.9 Hexagon bolts for high-strength structural bolting with large width across flats(short thread length) Product grade C Property classes 8.8 and 10.9 1984 1 ISO 7412, Hexagon bolts for high-strength structural bolting with large width across flats(short thread length) Product grade C
3、Property classes 8.8 and 10.9 . 1 8.8 10.9 , M12 M36 6 ( , 6 .) . ISO 261, KS B ISO 898 1 2 ISO 965 1 . (ISO 4775 ) . 8.8S U1) 10.9S U1) . 8.8S U 10.9S U ISO 4775 6H , . . 2 . . ( ) . KS B ISO 898 1, 1： , 1) 7. . KS B ISO 7412:2008 2 KS B ISO 898 2, 2： KS B ISO 3269, KS B ISO 7414, 6 1 B 10 KS B ISO
4、 7415, KS B ISO 7416, KS D ISO 1461, ISO 261, ISO general purpose metric screw threads General plan ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts ISO 965 1, ISO general purpose metric screw threads Tolerances Part 1： Principles and basic data ISO 4753
5、 Fasteners Ends of parts with external ISO metric thread ISO 4759 1, Tolerances for fasteners Part 1： Bolts, screws, studs and nuts Product grades A, B 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 d M20 a
6、 u2 P 1 lg max ls min 1.5 P . KS B ISO 7412:2008 3 1 a： mm , d M12bM16 M20 (M22)cM24 (M27)cM30 M36 P d1.75 2 2.5 2.5 3 3 3.5 4 e25 31 36 38 41 44 49 56 breff32 38 43 45 48 51 56 63 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 c 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 da 14.7 18.7 23.24 25.24 27.64 31.24 34.24 41.00 12.7
7、0 16.70 20.84 22.84 24.84 27.84 30.84 37.00 ds 11.30 15.30 19.16 21.16 23.16 26.16 29.16 35.00 ggggggggdw 19.2 24.9 31.4 33.3 38.0 42.8 46.5 55.9 e 22.78 29.56 37.29 39.55 45.20 50.85 55.37 66.44 7.5 10 12.5 14 15 17 18.7 22.5 7.95 10.75 13.40 14.90 15.90 17.90 19.75 23.55 k 7.05 9.25 11.60 13.10 14
8、10 16.10 17.65 21.45 k 4.9 6.5 8.1 9.2 9.9 11.3 12.4 15.0 r 0.6 0.6 0.8 0.8 1.0 1.2 1.2 1.5 21 27 34 36 41 46 50 60 s 20.16 26.16 33 35 40 45 49 58.5 l ls lgh lslg ls lglslglslglslglslg ls lg lslg30 28.95 31.05 35 33.75 36.25 40 38.75 41.25 9.8 15 45 43.75 46.25 14.8 20 8 14 50 48.75 51.25 19.8 25
9、13 19 55 53.5 56.5 24.8 30 18 24 11.5 19 60 58.5 61.5 29.8 35 23 29 16.5 24 14.5 22 65 63.5 66.5 34.8 40 28 34 21.5 29 19.5 27 15 24 70 68.5 71.5 39.8 45 33 39 26.5 34 24.5 32 20 29 17 26 75 73.5 76.5 44.8 50 38 44 31.5 39 29.5 37 25 34 22 31 80 78.5 81.5 49.8 55 43 49 36.5 44 34.5 42 30 39 27 36 20
10、5 31 85 83.25 86.75 54.8 60 48 54 41.5 49 39.5 47 35 44 32 41 25.5 36 90 88.25 91.75 59.8 65 53 59 46.5 54 44.5 52 40 49 37 46 30.5 41 22 3495 93.25 96.75 64.8 70 58 64 51.5 59 49.5 57 45 54 42 51 35.5 46 27 39100 98.25 101.75 69.8 75 63 69 56.5 64 54.5 62 50 59 47 56 40.5 51 32 44110 108.25 111.75
11、 66 72 59.5 67 57.5 65 53 62 50 59 43.5 54 35 47120 118.25 121.75 76 82 69.5 77 67.5 75 63 72 60 69 53.5 64 45 57130 128 132 86 92 79.5 87 77.5 85 73 82 70 79 63.5 74 55 67140 138 142 96 102 89.5 97 87.5 95 83 92 80 89 73.5 84 65 77150 148 152 106 112 99.5 107 97.5 105 93 102 90 99 83.5 94 75 87160
12、156 164 103 112 100 109 93.5 104 85 97170 166 174 113 122 110 119 103.5 114 95 107180 176 184 123 132 120 129 113.5 124 105 117190 186 194 133 142 130 139 123.5 134 115 127200 196 204 143 152 140 149 133.5 144 125 137KS B ISO 7412:2008 4 1 a( ) ： mm a . b . c 2 . dP e lnom100 mm f lnom 100 mm gdw ma
13、x sactual hlg max lnom bref, ls min lg max 3 P . 4 2 6 ga ISO 261, ISO 965 1 8.8 10.9 KS B ISO 898 1 2 (black oxide)b d e d e cKS D ISO 1461 KS D ISO 1461 f C ： c, dw min(0.95 smin) r 180 mm , ： 4.0 mm ISO 4759 1 KS B ISO 3269 ISO 4775 KS B ISO 7414 KS B ISO 7415 KS B ISO 7416 a . , 6az . 8.8S U 10.
14、9S U (6. 7. ). 6az A . b . c . d . e . f . KS B ISO 7412:2008 5 5 . B . 6 d M16, l 80 mm 8.8 , ISO 888 . 6 KS B ISO 7412 M1680 8.8 1 . 2 “U” (7. ). 7 . 7.1 a) KS B ISO 898 1 2 b) S c) U . 8.8S 10.9S 8.8S U 10.9S U 7.2 . , KS B ISO 7412:2008 6 A ( ) 6az 6az . A.1 . , h . az . esaz (300 20 P) A.1 6az
15、 mm d a M12 M16 M20 (M22) M24 (M27) M30 M36 6 8 10 10 12 12 15 18 18 24 30 30 36 36 45 53 11.66515.66019.65021.65023.64026.64029.63035.62011.40015.38019.31521.31523.26526.26529.20535.14510.52814.36118.02620.02621.69124.69127.35733.02210.37814.20117.85619.85621.49124.49127.14532.7989.771 13.495 16.9
16、44 18.944 20.392 23.392 25.841 31.290 0.175 0.200 0.250 0.250 0.300 0.300 0.350 0.400 a KS B ISO 7412:2008 7 B ( ) . a) 5. . . . . b) ( ) 6 . 1 2 mm . c) 10 % . , . B.1 . . B.1 ( ) ( ) l2d 2d l3d 3d l4d 4d l8d l 8d 180 240 300 360 420 6 ( ) C 8.8 10.9 135513 7017 (02)60094114 (02)600948878 http:/ Korean Agency for Technology and Standards http:/www.kats.go.kr KS B ISO 7412:2008KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Hexagon bolts for high-strength structural bolting with large width across flats (short thread length) Product grade C Property classes 8.8 and 10.9 ICS 21.060.10
