standard* standard range first choice alternate choice diameter range

PMKNSH
modular drills
D1 mm D1 inch drilling depth
with internal hole
min–maxmin–maxL/D1

coolant channel grade/series tolerance

TOP DRILL M1™ with front clamping mechanism

TOP DRILL M1

WU25PD** IT9–IT11 7,94–25,99 .3125–1.1023 —

inserts

TopSTEP SH— WP20PH chamfering

12,50–36,01— .4921–1.4177
inserts
TopSTEP VG—
WP20PH
7,94)Ø<9,50.3125)Ø<.3740
9,50)Ø<11,00.3740)Ø<.4331
11,00)Ø<12,50.4331)Ø<.4921
12,50)Ø<14,00.4921)Ø<.5512
TOP DRILL M1
— — 14,00)Ø<15,50max 3–8 x D .5512)Ø<.6102
bodies
15,50)Ø<16,50.6102)Ø<.6496
16,50)Ø<20,50.6496)Ø<.8071
20,50)Ø<21,00.8071)Ø<.8268
21,00)Ø<25,99.8268)Ø<1.023

* Apart from our standard drills, we can offer you a wide variety of special coating solutions and edge preparations to fulfill all your needs. If a specific drill is not suitable for your workpiece material, please contact your WIDIA distributor for available options. ** Grade WU25PD was previously named K20FTiAlN.