Toolholder ANSI Designation Chart

M W L N R 16 4 D

Insert Holding

Insert Shape

Toolholder Style

Insert Relief L

Hand

Shank Size

Insert IC

Length

M = clamp and lock pin

C = 80 deg. diamond

A = 0 side cutting, straight shank

N = 0

R = right hand

5 = 5/16 x 5/16

1.2 = 5/32"

A = 4"

P = lock pin only

D = 55 deg. diamond

B = 15 side cutting, straight shank

A = 3

L = left hand

6 = 3/8 x 3/8

1.5 = 3/16"

B = 4.5"

C = clamp only

K = paralellogram

C = 0 end cutting, straight shank

B = 5

N = neutral

8 = 1/2 x 1/2

1.8 = 7/32"

C = 5"

S = screw lock only

L = rectangle

D = 45 side cutting, straight shank

C = 7

10 = 5/8 x 5/8

2 = 1/4"

D = 6"

R = round

F = 0 end cutting, offset shank

P = 11

12 = 3/4 x 3/4

2.5 = 5/16"

E = 7"

S = square

G = 0 side cutting, offset shank

D = 15

16 = 1 x 1

3 = 3/8"

F = 8"

T = triangle

J = -3 side cutting, offset shank

E = 20

85 = 1 1/4 x 1

4 = 1/2"

M = 4"

V = 35 deg. diamond

K = 15 end cutting, offset shank

F = 25

20 = 1 1/4 x 1 1/4

5 = 5/8"

N = 4.5"

W = trigon

L = 5 side & end cut, offset shank

G = 30

24 = 1 1/2 x 1 1/2

6 = 3/4"

P = 5"

M = 40 side cutting, straight shank

86 = 1 1/2 x 1

8 = 1"

R = 6"

N = 27 side cutting, straight shank

32 = 2 x 2

10 = 1 1/4"

S = 7"

R = 15 side cutting, offset shank

T = 8"

S = 45 side cutting, offset shank

T = 30 side cutting, offset shank

U = -3 end cutting, offset shank

V = 17.5 side cut, straight shank

Y = 50 side cutting,
straight shank