TopThread ™
Catalogue Numbering System
TopThread
Holder Identifi cation System
NSR2525M4
N S R
Insert
Holding
Method Insert
Mounting
Location Hand
of Tool
N —
TopThread ™
Drop
Head
2525 M 4
Shank
Size Tool
Length Insert
Size
Shank height and
width in mm and
holder
End mount
E
Side mount,
offset
S
Side mount,
no offset
L1 ISO
32 A
40 B
50 C
60 D
70 E
80 F
90 G
100 H
110 J
125 K
140 L
150 M
160 N
170
AS
180 Q
200 R
250
DH
P
S
300 T
350 U
400 V
450 W
500 Y
special
length x
Qualifi ed
Holder
Q — Qualifi ed
holder
W1
insert
size W1
2 3,81
3 4,95
4 6,98
5 9,65
6 9,73
8 11,13
R
L
Side mount
R
widia.com
L
F23
End mount