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RE
NPMT
Internal and Central Inserts for W1 W1
Drilling Heads
ISD-EF-FB /IDD-EF-FB
INSL S RE INSL
NPMT...L NPMT...R
Dimensions Tough 1 Hard

IC9025 IC908 IC520 IC806
Designation W1 INSL S RE DEEP DRILLING - BTA SYSTEM
NPMT 050304R-G-I .217 .315 .118 .0157 • • •
NPMT 060404R-G-I .256 .394 .157 .0157 • • • •
NPMT 080404R-G-I .315 .394 .157 .0157 • • • •
NPMT 090404R-G-I .374 .394 .157 .0157 • • • •
NPMT 120404R-G-I .492 .394 .157 .0157 • • • •
NPMT 050304R-HF-I .217 .315 .118 .0157 • •
NPMT 060404R-HF-I .256 .394 .157 .0157 • •
NPMT 080404R-HF-I .315 .394 .157 .0157 • •
NPMT 090404R-HF-I .374 .394 .157 .0157 • •
NPMT 120404R-HF-I .492 .394 .157 .0157 • •
NPMT 050308L-G-C .217 .315 .118 .0315 • • •
NPMT 060408L-G-C .256 .394 .157 .0315 • • • •
NPMT 080408L-G-C .315 .394 .157 .0315 • • • •
NPMT 090408L-G-C .374 .394 .157 .0315 • • • •
NPMT 120408L-G-C .492 .394 .157 .0315 • • • •
NPMT 050308L-HF-C .217 .315 .118 .0315 • •
NPMT 060408L-HF-C .256 .394 .157 .0315 • •
NPMT 080408L-HF-C .315 .394 .157 .0315 • •
NPMT 090408L-HF-C .374 .394 .157 .0315 • •
NPMT 120408L-HF-C .492 .394 .157 .0315 • •
For tools, see pages: IDD-EF-FB (255) • ISD-EF-FB (253) • ISD-IF-FB (254)

Chipbreaker Comparison
NPMT & NPHT HF - Provides drilling stability
IC908 IC520 IC806 at high feed rates
P lll m mm
G chipbreaker
M mm m lll

K lll m mm
HF chipbreaker
N lll mm

S mm m lll

H mm lll Chipbreaker cross-section

••• First priority
Chipbreaker type:
Note for mounting a drill head
G - General
Insert Size Corner Radius Size
Please be sure to use a wrench for a drill head to be
HF – High feed
clamped fi rmly.
NP#T ## ## ## #-##-# IC###
Insert type:
M – pressed (central & intermediate) Thickness L - Left Insert position: Grade
H – ground (peripheral) R – Right P - peripheral
I - Intermediate
C - center

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