[*]This chart describes the 7 digit system we use to describe our inserts. Just click on any category to see a description and list of possible callouts.

wpe1.jpg (6898 bytes)

[shape][clearance][tolerance][type][size][thickness][cutting point]


T Triangle
R Round
S Square
D 55°Diamond
C 80°Diamond
V 35°Diamond
L Rectangle




P 11°
D 15°
E 20°
F 25°
G 30°




A I.C. ±.0002, thickness ±.001
B I.C. ±.0002, thickness ±.005
C I.C.t ±.0005, thickness ±.001
D I.C. ±.0005, thickness ±.005
E I.C. ±.001, thickness ±.001
G I.C. ±.001, thickness ±.005
M I.C. ±.002 to .005, thickness ±.005
U I.C. ±.005 to ±.021, thickness ±.005




A with hole
B with hole and one countersink
C with hole and two countersinks
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




I.C. size 1/4" and over use (number of 1/8ths in size).

I.C. size under 1/4" use (number of 1/32nds" in size)

For a rectangle and a parallelogram use two digits (the number of 1/8ths" in width and 1/4ths" in length).




I.C. size 1/4" and over use (number of 1/16ths" in thickness).

I.C. size under 1/4" use (number of 1/32nds" in thickness)



Cutting Point

0 sharp corner
1 1/64 radius
2 1/32 radius
3 3/64 radius
4 1/16 radius
6 3/32 radius
8 1/8 radius
A square insert with 45° chamfer