1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS B ISO 77212 2: KS B ISO 77212 :2010 2010 12 29 http:/www.kats.go.krKS B ISO 77212:2010 : ( ) ( ) ( ) : (http:/www.standard.go.kr) : :1995 12 26 :2010 12 29 2010-0671 : : ( 02-509-7274) (http:/www.kats.go.kr). 10 5 , . KS B ISO 77212:2010 2: Countersunk f
2、lat head screwsPart 2: Penetration depth of cross recesses 1990 1 ISO 77212, Countersunk flat head screwsPart 2:Penetration depth of cross recesses , . , “ ” . 2 . . . . . . . , . KS B ISO 70461( A ) . . . . 1 1( ) 2( ) 2 . KS B ISO 77212:2010 2 2 . . ( ) . ISO 225:1983, FastenersBolts, screws, stud
3、s and nutsSymbols and designations of dimensions ISO 225 KS B 0246( ) . ISO 4757:1983, Cross recesses for screws ISO 4757 KS B 0230( ) . KS B ISO 7721, 3 1 . 1 2 1 2 . , KS B ISO 7721 1) . ISO 225 . ISO 225 KS B 0246 . 1 2 1) KS B ISO 77211 . KS B ISO 77212:2010 3 1 :mm 1() 2() (d) H Z H Z b b b b a
4、 m () m () m () m () 1M1.6 0.60.9 1.6 0.700.951.6 M2 0.91.2 1.9 0.951.201.9 0.9 1.2 1.9 0.95 1.20 1.9 ST2.2 0 0.9 1.2 1.9 0.95 1.20 2.1 1M2.5 1.41.8 2.9 1.481.732.8 11.25 11.55 2.7 1.22 1.47 2.5 M3 ST2.9 1 1.7 2.1 3.2 1.76 2.01 3.1 1.4 1.8 2.9 1.48 1.73 2.8 1M3.5 ST3.5 1.9 2.4 4.4 1.75 2.20 4.1 1.6
5、2.1 4.1 1.61 2.05 4.1 M4 ST4.2 2.1 2.6 4.6 2.06 2.51 4.4 2.1 2.6 4.6 2.06 2.51 4.4 M5 ST4.8 2 2.7 3.2 5.2 2.60 3.05 4.9 2.3 2.8 4.8 2.27 2.72 4.6 ST5.5 2.8 3.3 6.6 2.73 3.18 6.3 M6 ST6.3 3 3.0 3.5 6.8 3.00 3.45 6.6 2.8 3.3 6.6 2.73 3.18 6.3 M8 ST8.3 4.04.6 8.9 4.154.608.8 3.9 4.4 8.7 3.87 4.32 8.5 M
6、10 ST9.5 4 5.1 5.7 10.1 5.19 5.64 9.8 4.8 5.3 9.6 4.78 5.23 9.4 c 4.8 8.8, 9.8 8.8 a ISO 4757 . ISO 4757 KS B 0230 H Z . b ISO 4757 . c . . KS B 0230, KS B 1023( ) “ q” . . KS B ISO 77212:2010 4 A () 1 KS B ISO 70461:2008, H Z ( ) A 1: 4.8 KS B ISO 70461 KS B 1023 4.8 . 2 KS B ISO 70462:2008, ( ) A
7、2 : 8.8 , KS B ISO 70462 KS B 1023 8.8 . 2: 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS B ISO 77212 :2010 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Countersunk flat head screws Part 2 : Penetration depth of cross recesses ICS 21.060.10 Korean Agency for Technology and Standards http:/www.kats.go.kr
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