TECHNICAL DATA
Inserts

Stanard Identification System
Main Tech Menu
Standard Insert Identification System
Turning, Boring & Drilling (NOT Milling)
 
Each of the characters in the part number corresponds to a different characteristic of the insert. Below is a key to identifying the characteristics of the insert by part number.
Example: TNMG 542A
T N M G 5 4 2 A
Shape Relief Angle Tolerances Type Size Thickness Cutting Point Radius, Flats Other Conditions
Shape
A - Parallelogram 85°
B - Parallelogram 82°
C - Diamond 80°
D - Diamond 55°
E - Diamond 75°
H - Hexagon
K - Parallelogram 55°
L - Rectangle
M - Diamond 86°
O - Octagon
P - Pentagon
R - Round
S - Square
T - Triangle
V - Diamond 35°
W - Trigon 80°
Relief Angle
N - 0°
A - 3°
B - 5°
C - 7°
P - 11°
D - 15°
E - 20°
F - 25°
G - 30°
Tolerances
Insert I.C.Thickness
A = ±.0002±.001
B = ±.0002±.005
C = ±.0005±.001
D = ±.0005±.005
E = ±.001±.001
F = ±.0002±.001
G = ±.001±.005
H = ±.0005±.001
J = ±.0002±.001
K = ±.0005±.001
L = ±.001±.001
M = *±.005
U = *±.005
N = *±.001
* Exact size is determined by size of insert, see below.
I.C.Min.U
3/16.003.005
7/32.003.005
1/4.003.005
5/16.003.005
3/8.003.005
1/2.005.008
5/8.006.011
3/4.006.011
1.007.015
1-1/4.008.015
R = Blank with grind stock on all surfaces
S = Blank with grind stock on top and bottom surfaces only
Type
A - With hole
B - With hole and one countersink
C - With hole and two countersinks
D - Smaller than 1/4 I.C. with hole
E - Smaller than 1/4 I.C. without hole
F - Clamp-on type with chipbreaker
G - With hole and chipbreaker
H - With hole, one countersink and chipbreaker
J - With hole, two countersinks and chipbreaker
*K - With hole, double sided, special 5° positive chipbreaker
*L - With hole, double sided, special 5° negative chipbreaker
M - With hole and special features on top rake surface only
*N - Narrow chipbreaker land both sides with hole
*O - Bumpy style chipbreaker both sides with hole
P - 10° positive chipbreaker both sides with hole
*Q - Double positive chipbreaker one side, with hole
R - Extra wide chipbreaker land both sides with hole
S - Double positive chipbreaker both sides with hole
T - With hole, one countersink
W - With hole, one countersink
X - Extra Wide chipbreaker groove both sides with hole
Y - High double positive chipbreaker one side with hole
Z - High positive chipbreaker both sides with hole

*ANC Identification only
Size
Number of 1/32nds on inserts less than 1/4 I.C.
Number of 1/8ths on inserts 1/4 I.C. and over.
Regtangle and parallellogram inserts require two digits:

1st Digit = Number of 1/8ths in width
2nd Digit = Number of 1/4ths in length
Thickness
Number of 1/32nds on inserts less than 1/4 I.C.
Number of 1/16ths on inserts 1/4 I.C. and over
Use width dimension in place of I.C. on rectangle and parallelogram inserts.
Cutting Point Radius, Flats

Cutting Point Radius
0 - Sharp Corner 3 - 3/64 Radius
1 - 1/64 Radius 4 1/16 Radius
2 - 1/32 Radius 6 - 3/32 Radius
8 - 1/8 Radius 

Flats
A - Square insert with 45° chamfer
B - Square insert with 4° chamfer and 4° sweep angle, R.H. or Neg.
C - Square insert with 45° chamfer and 4° sweep angle, L.H.
D - Square insert with 30° chamfer, R.H. or Neg.
E - Square insert with 15° chamfer, R.H. or Neg.
F - Square insert with 5° chamfer, R.H. or Neg.
G - Square insert with 30° chamfer, L.H.
H - Square insert with 30° chamfer, L.H.
I - Square insert with 15° chamfer, L.H.
J - Square insert with 5° chamfer, L.H.
K - Square insert with 30° double chamfer
L - Square insert with 15° double chamfer
M - Square insert with 5° double chamfer
N - Truncated triangle insert
P - Flatted corner triangle, R.H. or Neg.
R - Flatted corner triangle, L.H.
S - Square negative insert with 10° double chamfer
T - Square negative insert with 30° positive rake chamfer
V - Octagon negative insert with 2-1/2° corner chamfer
Other Conditions
A - Honed .001-.003
B - Honed .003-.005
C - Honed .005-.007
J - Polished cutting surface only
K - Chamfer - cutting edge - complete
T - Chamfer - cutting - partial edge
X - Honed .001