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Standard Insert Identification System
TURNING & BORING
(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.
(Click on the Letter or Number for
Description of Valid Codes)
T N M G . 5 4 2 A
| "T" SHAPE
(First Character)
|
| 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° |
| "N" RELIEF
ANGLE (2nd Character)
|
| N |
0° |
| A |
3° |
| B |
5° |
| C |
7° |
| P |
11° |
| D |
15° |
| E |
20° |
| F |
25° |
| G |
30° |
"M"
TOLERANCES (3rd
Character)
|
Insert
I.C.
|
Thickness
|
| A |
+-.0002 |
+-.001 |
| B |
+-.0002 |
+-.005 |
| C |
+-.0005 |
+-.001 |
| D |
+-.0005 |
+-.005 |
| E |
+-.001 |
+-.001 |
| G |
+-.001 |
+-.005 |
| H |
+-.0005 |
+-.001 |
| M* |
+-.002-.004 |
+-.005 |
| U* |
+-.005-.012 |
+-.005 |
| R |
Blank
with grind stock on all surfaces
|
| S |
Blank with grind
stock on top and bottom surfaces only |
| *Exact tolerance
is determined by size of insert. |
| "G" TYPE
(4th Character)
|
| 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 one 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 |
| 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 |
| *Not ANSI Spec |
"5"
SIZE (5th
Character)
|
| Number of 1/32nds on Inserts less than
1/4" I.C. |
| Number of 1/8ths on Inserts over 1/4"
I.C. and over. |
| Rectangles and Parallelogram Inserts require
two digits: 1st Digit - Number of
1/8ths in width
2nd Digit - Number of 1/4ths in length.
|
| "4" THICKNESS
(6th Character)
|
| 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.. |
| "2" CUTTING
POINT RADIUS, FLATS (7th Character)
|
| 0 |
Sharp Corner |
| 1 |
1/64 Radius |
| 2 |
1/32nd Radius |
| 3 |
3/64 Radius |
| 4 |
1/16th Radius |
| 6 |
3/32 Radius |
| 8 |
1/8 Radius |
| A |
Square insert with 45° chamfer |
| B |
Square insert with 45° 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 15° chamfer, L.H. |
| J |
Square insert with 5° chamfer, L.H. |
| K |
Square insert with 30° double chamfer, R.H. |
| 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 22-1/2"
corner chamfer |
| "A" OTHER
CONDITIONS (8th Character)
|
| (See Note) |
| 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 edge partial |
| Note: Exact hone
size is determined by size of insert. |
|
