Drill heads Indexable Drill Tu b e Categories Drill Tubes Applications STS(Single Tube System) DTS(Double Tube System) ST UB OT IT Drill tubes Tube diameter (mm) ø14 - ø274 ø13 - ø274 ø18 - ø166 ø10 - ø130 Thread type Internal 4-start External single- Internal 4-startthreadstart threadthread- FNTR ◯ ◯ ◯ ◯ FNBM ◯ ◯ ◯ ◯ For solid drilling KUSTS ◯ ◯ - - KUDTS - - ◯ ◯ KUSTR ◯ ◯ - - For counterboring KUDTR - - ◯ ◯ FortrepanningUTT ◯ ◯ - - Drill diameter (mm) ø15.6 - ø291.99 ø15.51 - ø293.99 ø18.4 - ø183.99 ø18.4 - ø183.99 Page 062 064 066 066 Tungaloy 007