WFHF 5.3HBH WFHF HBHBH WFHF 5.3HBH BH BH GradeInsertExt. ToolholderInt. ToolholderThreadingGroovingEndmillDrilling ToolTechnical Reference STCR/L-18External threading toolholder 1 LF LH Right hand (R) shown. 2 Designation H B LF LH HF WF HBH Insert STCR/L1010X18 10 10 120 18.5 10 10 4.5 TC*18... STCR/L1212F18 12 12 85 18.5 12 12 2.5 TC*18... STCR/L1212X18 12 12 120 18.5 12 12 2.5 TC*18... STCR/L1616X18 16 16 120 18.5 16 16STCR/L2020X182020120232025Use right-hand toolholders (R) with right-hand inserts (R); and left-hand toolholders (L) with left-hand inserts (L).--TC*18...TC*18...3 SPARE PARTS Designation Clamping screw Wrench STCR... CSTC-4L100DL T-1008/5 STCL... CSTC-4L100DR T-1008/5 4 STCR/L-18 External threading toolholder, with high pressure coolant capabilityLF LF 5 LH 5/16”-24UNF LH 5/16”-24UNF 1 L3 Fig. 1 1 L3 Fig. 2 Right hand (R) shown. 6 Designation H B LF LH L3 HF WF HBH Fig. Insert Torque* STCR/L1212F18-CHP 12 12 85 18.5 17.5 12 0 /12 4 2 TC*18... 1.2 STCR/L1212X18-CHP (1) 12 12 120 18.5 17.5 12 0 /12 4 1 TC*18... 1.2 STCR/L1616X18-CHP (1) 16 16 120 18.5 - 16 0 /16 0 1 TC*18... 1.2 This toolholder can be used with threading and grooving inserts. Use right-hand toolholders (R) with right-hand inserts (R); and left-hand toolholders (L) with left-hand inserts (L)(1) Compatible to the direct internal coolant supply system without the use of external coolant hose.*Torque: Recommended clamping torque (N∙m)7 SPARE PARTS Designation Clamping screw Wrench STCL**18-CHP CSTC-4L100DR T-1008 /5 Groove width : 0.33 ~ 3 mm STCR**18-CHP CSTC-4L100DL T-1008 /5 Pitch : 0.8 ~ 3 mm 8 9 Reference pages: Inserts → 5-4, Standard cutting conditions → 5-25 Parts for coolant hose → 3-61 5-15