Spiral Fluted Taps (for blind hole)Spiral Fluted Taps(for through hole)Spiral Pointed Taps(for through hole)Hand TapsCementedCarbide TapsRoll TapsSpecial Thread TapsSimple Inspection ToolsPipe TapsThread MillsPremium Thread MillsDiesCenter DrillsCentering Tools ⑪ Center Drills / Centering Tools Drill Shank Overall Drill Bodydia.dia.lengthlengthlength−DcDsLℓℓ2H JIS ① JOINT TOOLS Product Features ② 1 Economics Various types of tools suitable for different machining applicationscan be mounted onto one holder. If the tool becomes damaged, you can simply replace the tool portion without replacing the holder. ③ YAMAWA utilizes a special screw Special screw ④ 2 Strengthened thread to join the tool to the holder.fasteningThe thread contact surface ispowerwidened, and the fastening force is strengthened. ⑤ Fastening portion (fitting of matching 3 SuperiorRunout Using a conical alignment surface conical surfaces).improves concentricity accuracy Accuracy and produces less runout. ⑥ Joint Tool ⑦ By strengthening the fastening4High rigidityforce, a high rigidity is guaranteedand machining with a high load is possible. ⑧ Notes · Use a spanner wrench (JIS B 4630) when exchanging the cutting tools. · For the size of the spanner, refer to the H dimension in the dimension table. ⑨ · Please note that excessive tightening may cause breakage of the cutting tool or holder. ⑩ [Reference] Tightening torque (N · m) Applicable holderShank diameterTightening torque ⑪ 14 51610 20 30 JIS ⑪-59