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Boring Bar ANSI Designation Chart
What do the numbers and letters mean on your boring bar? Find out here! Helpful cross-reference chart for identifying boring bars based on ANSI.
| S |
16 |
S |
C |
C |
L |
F |
R |
4 |
|
Boring Bar Type |
Bar Dia |
Length |
Insert Holding |
Insert Shape |
Boring Bar Style |
Insert Relief L |
Hand |
Insert IC |
|
S = solid steel bar |
03 = 3/16" |
F = 3" |
M = clamp and lock pin |
C = 80 deg. diamond |
F = 0º end cutting |
N = 0º |
R = right hand |
1.2 = 5/32" |
|
A = steel bar w/ coolant hole |
04 = 1/4" |
G = 3 1/2" |
P = lock pin only |
D = 55 deg. diamond |
J = -3º side cutting |
A = 3º |
L = left hand |
1.5 = 3/16" |
|
B = solid steel anti-vib bar |
05 = 5/16" |
H = 4" |
C = clamp only |
K = paralellogram |
K = 15º end cutting |
B = 5º |
|
1.8 = 7/32" |
|
D = steel anti-vib bar w/ coolant hole |
06 = 3/8" |
J = 4 1/2" |
S = screw lock only |
L = rectangle |
L = -5º side & end cut |
C = 7º |
|
2 = 1/4" |
|
C = carbide bar (steel head) |
08 = 1/2" |
K = 5" |
|
R = round |
Q = -17.5º end cutting |
P = 11º |
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2.5 = 5/16" |
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E = carbide bar (steel head) w/ coolant hole |
10 = 5/8" |
L = 5 1/2" |
|
S = square |
S = 45º end cutting |
D = 15º |
|
3 = 3/8" |
|
F = carbide anti-vib bar (steel head) |
12 = 3/4" |
M = 6" |
|
T = triangle |
U = -3º end cutting |
E = 20º |
|
4 = 1/2" |
|
G = carbide anti-vib bar (steel head) w/ coolant hole |
16 = 1" |
N = 6 1/2" |
|
V = 35 deg. diamond |
W = -30º end cutting |
F = 25º |
|
5 = 5/8" |
|
H = heavy metal bar |
20 = 1 1/4" |
P = 6 3/4" |
|
W = trigon |
Y = 5º end cutting |
G = 30º |
|
6 = 3/4" |
|
J = heavy metal bar w/ coolant hole |
24 = 1 1/2" |
Q = 7" |
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8 = 1" |
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28 = 1 3/4" |
R = 8" |
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10 = 1 1/4" |
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32 = 2" |
S = 10" |
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36 = 2 1/4" |
T = 12" |
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40 = 2 1/2" |
U = 14" |
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V = 16" |
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W = 18" |
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Y = 20" |
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Z = special |
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