1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS B ISO 273 KS B ISO 273:2010 2010 12 29 http:/www.kats.go.krKS B ISO 273:2010 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：1978 12 29 ：2010 12 29 2010-0671 ： ： ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS B ISO 273:2010 Diameter of clearance holes a
2、nd counterbores for bolts and screws KS B 1007 1979 1 ISO 273, Fasteners Clearance holes for bolts and screws . 1 ( , .) . ISO 273： 1979 . 2 . . ( ) . KS B 0401, ISO 273： 1979, Fasteners Clearance holes for bolts and screws 3 . 3.1 d ( 1 ). 3.2 dh ( 1 ). KS B ISO 273:2010 2 1 4 1 4 , 1 . KS B ISO 27
3、3:2010 3 1 ： mm dh dh 1 2 3 4ae D 1 2 3 4a e D 1 1.1 1.2 1.3 0.2 3 42 43 45 48 1.8 82 1.2 1.3 1.4 1.5 0.2 4 45 46 48 52 1.8 87 1.4 1.5 1.6 1.8 0.2 4 48 50 52 56 2.3 93 1.6 1.7 1.8 2 0.2 5 52 54 56 62 2.3 100 1.7 1.8 2 2.1 0.2 5 56 58 62 66 3.5 110 1.8 2 2.1 2.2 0.2 5 60 62 66 70 3.5 115 2 2.2 2.4 2.
4、6 0.3 7 64 66 70 74 3.5 122 2.2 2.4 2.6 2.8 0.3 8 68 70 74 78 3.5 127 2.3 2.5 2.7 2.9 0.3 8 72 74 78 82 3.5 133 2.5 2.7 2.9 3.1 0.3 8 76 78 82 86 3.5 143 2.6 2.8 3 3.2 0.3 8 80 82 86 91 3.5 148 3 3.2 3.4 3.6 0.3 9 85 87 91 96 3.5 3.7 3.9 4.2 0.3 10 90 93 96 101 4 4.3 4.5 4.8 5.5 0.4 11 95 98 101 107
5、 4.5 4.8 5 5.3 6 0.4 13 100 104 107 112 5 5.3 5.5 5.8 6.5 0.4 13 105 109 112 117 6 6.4 6.6 7 117.8 0.4 15 110 114 117 122 7 7.4 7.6 8 0.4 18 115 119 122 127 8 8.4 9 10 10 0.6 20 120 124 127 132 10 110.5 11. 12 13 0.6 24 125 129 132 137 12 13 13.5 14.5 15 1.1 28 130 134 137 144 14 15 15.5 16.5 17 1.1
6、 32 140 144 147 155 16 17 117.5 118.5 20 1.1 35 150 155 158 165 18 19 20 21 22 1.1 39 20 21 22 24 25 1.2 43 22 23 24 26 27 1.2 46 ( ) dh bH12 H13 H14 24 25 26 28 29 1.2 50 27 28 30 32 33 1.7 55 30 31 33 35 36 1.7 62 a 4 . b KS B 0401 . 33 34 36 38 40 1.7 66 36 37 39 42 43 1.7 72 39 40 42 45 46 1.7 7
7、6 1 ISO 273 fine(1 ), medium(2 ) coarse(3 ) 3 . ( ) KS B ISO 273:2010 4 ISO 273 . 2 ISO 261(ISO general purpose metric screw threadsGeneral plan) . 3 , 90 . 4 , . 5 , . KS B ISO 273:2010 5 KS B ISO 273:2010 , . 2000 . 1 . 1.1 1978 ISO 273： 1979(Fasteners Clearance holes for bolts and screws) 1986 19
8、91 1 , 1996 2 . 1.2 a) WTO . b) ISO 273： 1979 . 2 2.1 a) , . b) , . . 2.2 KS B 1007 ISO 273 . a) KS , ISO . b) KS 4 , ISO fine, medium coarse 3 . c) KS ISO . KS B ISO 273:2010 6 2.3 KS A 0001： 2000 . 3 3.1 , . 3.2 , KS ISO . 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS B ISO 273:2010 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Diameter of clearance holes and counterbores for bolts and screws ICS 21.060.10 Korean Agency for Technology and Standards http:/www.kats.go.kr
