Spiral Mill-Thread Inserts Spiral Mill-Thread Inserts End Mills for Hecial Threading Inserts D d L Designation D DimensionsdL L1 ap Z Applicable Spare PartsInsertScrewWrench SRH 23-2 23 25 110 50 27 2 H23 S23 Tk21 32-5 32 32 130 60 32 5 H32 S32 Tk22 45-6 45 32 130 37 6 H45 S45 Tk40 End Shell Mills for Hecial Threading Inserts Da 087 o Lap r D Designation D DimensionsDaL ap Z Applicable Spare PartsInsertScrewWrench SRH 63-9-22 63 22 50 30 9 H63 S63 Tk40