③-12 JIS ⑪ ⑩ ⑨ ⑧ ⑦ ⑥ TYPE:8TYPE:7 ⑤ ④TYPE:6TYPE:5 ③ TYPE:4TYPE:3 ② ① TYPE:2TYPE:1 JIS ③ Length ofSize ofShankShankThread + NeckThreadOverallsquaresquaredia.lengthlengthlengthlengthℓkKDsℓsℓnℓL Center DrillsCentering ToolsDies Thread MillsPremium Thread MillsPipe TapsSpecial Thread TapsSimple Inspection ToolsRoll TapsCementedCarbide TapsHand TapsSpiral Pointed Taps(for through hole)Spiral Fluted Taps(for through hole)Spiral Fluted Taps(for blind hole)