BDC: (6% and 10% Cobalt, Unground)
Blank Designation
D
A
L
B
Nominal
Actual
BDC-1
1/8
0.142±0.004
3/64
0.065±0.004
1 1/4
1/16
BDC-2
3/16
0.207±0.005
5/64
0.096±0.004
1 7/8
3/32
BDC-3
1/4
0.270±0.005
7/64
0.127±0.004
2
BDC-4
5/16
0.334±0.006
0.143±0.004
2 1/8
9/64
BDC-5
7/16
0.460±0.006
0.206±0.005
2 3/4
13/64
BDC-6
1/2
0.524±0.007
7/32
0.237±0.005
3
15/64