IGETALLOY Indexable Insert Identification Table
C N M G C N M G
A.N.S.I.
I.S.O.
(3)
(1)
(4)
(2)
(1) Insert Shape Refer to Table 1
(3) Tolerance Refer to Table 3
B
(2) Relief Angle Refer to Table 2
(4) Insert Hole Refer to Table 4
Table 1: (1) Insert Shape
Table 2: (2) Relief Angle
Table 3: (3) Tolerance (inch)
Tolerance of Nose Height (inch)
Inscribed Circle (inch)
Thickness (inch)
Symbol
Insert Shape
Angle
Symbol
Relief Angle
Symbol
C D E V R S
A F C E G
80˚ 55˚ 75˚ 35˚
B C D E
±0.0002 ±0.001 ±0.001
5˚
Diamond Type
±0.0002 ±0.0005 ±0.001
7˚
±0.0005 ±0.001 ±0.001
15˚
C
±0.001 ±0.001 ±0.001
—
Round Type
20˚
±0.001 ±0.001 ±0.005
90˚ 60˚ 80˚ 85˚ 55˚
Square Type
F
25˚
T
J
Triangular Type
±0.0002 ± .002 to ± .006 ±0.001
W
D
Trigon Type
N
M U
0˚
± .003 to ± .008 ± .002 to ± .006 ±0.005
A K H O
Parallelogram Type
P
± .005 to ± .015 ± .003 to ± .010 ±0.005 mark indicates inserts that generally have sintered side surfaces. Refer to the table below (reference) for details on M class precision. (Reference) Breakdown of M-Class Tolerance by Shape and Size ● Tolerance of Nose Height (inch) Inscribed Circle Triangular Type Square Type 80° Diamond Type 55° Diamond Type 35° Diamond Type Round Type 1/4 ±.003 ±.003 ±.003 ±.004 ±.006 — 3/8 ±.003 ±.003 ±.003 ±.004 ±.006 — 1/2 ±.005 ±.005 ±.005 ±.006 — — 5/8 ±.006 ±.006 ±.006 ±.007 — — 3/4 ±.006 ±.006 ±.006 ±.007 — — 1 ±.007 ±.007 ±.007 — — — 1 1/4 — ±.008 — — — — Inscribed Circle Triangular Type Square Type 80° Diamond Type 55° Diamond Type 35° Diamond Type Round Type 1/4 ±.002 ±.002 ±.002 ±.002 ±.002 — 3/8 ±.002 ±.002 ±.002 ±.002 ±.002 ±.002 1/2 ±.003 ±.003 ±.003 ±.003 — ±.003 5/8 ±.004 ±.004 ±.004 ±.004 — ±.004 3/4 ±.004 ±.004 ±.004 ±.004 — ±.004 1 ±.005 ±.005 ±.005 — — ±.005 1 1/4 — ±.006 — — — ±.006 ● Tolerance of Inscribed Circle (inch)
11˚
R
O
120˚ 135˚
Trigon Type
Others
Octagonal Type
mark indicates inserts that are sometimes used with a 10˚ relief angle.
L
90˚ 86˚
Rectangular Type
M
Diamond Type
S
T
Table 4: (4) Insert Hole
Symbol Hole Y/N
Hole Shape
Hole Y/N
Hole Shape
Chipbreaker Shape (Cross Section) Symbol
Chipbreaker Shape (Cross Section)
N E R
A
No
No
V
One Face Double- sided
One Face Double- sided
No No
Yes
M
Cylindrical
G
F
W
Straight hole + single chamfer (70 ˚ to 90 ˚ ) Straight hole + double chamfer (70 ˚ to 90 ˚ )
Straight hole + single chamfer (40˚ to 60˚) Straight hole + double chamfer (40 ˚ to 60 ˚ )
W
B
No
No
Yes
Yes
T D Q
One Face
One Face
H
C
No
No
Yes
Yes
Double- sided
Double- sided
U
J
X
Special
— — —
B2
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