Cobalt Drills
Recommended for use in high temperature alloys, hardened stainless steels, heat-treated alloy steels or any tough application where drill hardness and rigidity is essential.
Sizes
Series JL25 - Jobbers Length HSCO
Series SM25 - Screw Machine Length HSCO
Series TL25 - Taper Length HSCO
Series EL825 - 8" O/A Length, 6" Flute HSCO
Series EL1225 - 12" O/A Length, 9" Flute HSCO
Also Available - T/S, 6" A/C Ext, 12" A/C Ext HSCO
Size | Decimal |
1/8" | .1250 |
3.20mm | .1260 |
3.25mm | .1280 |
#30 | .1285 |
3.30mm | .1299 |
3.40mm | .1339 |
#29 | .1360 |
3.50mm | .1378 |
9/64" | .1406 |
3.60mm | .1417 |
#27 | .1440 |
3.70mm | .1457 |
#26 | .1470 |
3.75mm | .1476 |
#25 | .1495 |
#24 | .1520 |
3.90mm | .1535 |
#23 | .1540 |
5/32" | .1562 |
#22 | .1570 |
4.00mm | .1575 |
#21 | .1590 |
#20 | .1610 |
4.10mm | .1614 |
4.20mm | .1654 |
#19 | .1660 |
4.25mm | .1673 |
# 18 | .1695 |
11/64" | .1719 |
# 17 | .1730 |
# 16 | .1770 |
#15 | .1800 |
4.60mm | .1811 |
#14 | .1820 |
#13 | .1850 |
4.75mm | .1870 |
3/16" | .1875 |
#12 | .1890 |
#11 | .1910 |
4.90mm | .1929 |
#10 | .1935 |
#9 | .1960 |
5.00mm | .1969 |
#8 | .1990 |
#7 | .2010 |
13/64" | .2031 |
#6 | .2040 |
5.20mm | .2047 |
#5 | .2055 |
5.25mm | .2067 |
5.30mm | .2087 |
#4 | .2090 |
5.40mm | .2126 |
#3 | .2130 |
5.50mm | .2165 |
7/32" | .2188 |
5.60mm | .2205 |
#2 | .2210 |
5.70mm | .2244 |
5.75mm | .2264 |
#1 | .2280 |
5.90mm | .2323 |
A | .2340 |
15/64" | .2344 |
6.00mm | .2362 |
B | .2380 |
6.10mm | .2402 |
C | .2420 |
6.20mm | .2441 |
D | .2460 |
6.30mm | .2480 |
1/4" | .2500 |
6.40mm | .2520 |
6.50mm | .2559 |
F | .2570 |
6.60mm | .2598 |
G | .2610 |
6.70mm | .2638 |
17/64" | .2656 |
H | .2660 |
6.80mm | .2677 |
I | .2720 |
7.00mm | .2756 |
J | .2770 |
7.10mm | .2795 |
9/32" | .2812 |
7.20mm | .2835 |
7.25mm | .2854 |
7.30mm | .2874 |
L | .2900 |
7.40mm | .2913 |
M | .2950 |
19/64" | .2969 |
7.60mm | .2992 |
N | .3020 |
7.70mm | .3031 |
7.75mm | .3051 |
7.80mm | .3071 |
7.85mm | .3091 |
7.90mm | .3110 |
5/16" | .3125 |
8.00mm | .3150 |
0 | .3160 |
8.10mm | .3189 |
P | .3230 |
8.25mm | .3248 |
8.30mm | .3268 |
21/64" | .3281 |
8.40mm | .3307 |
Q | .3320 |
8.50mm | .3346 |
8.60mm | .3386 |
R | .3390 |
8.70mm | .3425 |
11/32" | .3438 |
8.75mm | .3445 |
8.80mm | .3465 |
S | .3480 |
8.90mm | .3504 |
9.00mm | .3543 |
T | .3580 |
23/64" | .3594 |
9.20mm | .3622 |
9.25mm | .3642 |
9.30mm | .3661 |
U | .3680 |
9.40mm | .3701 |
9.50mm | .3740 |
3/8" | .3750 |
V | .3770 |
9.60mm | .3780 |
9.70mm | .3819 |
9.75mm | .3839 |
W | .3860 |
9.90mm | .3898 |
25/64" | .3906 |
10.00mm | .3937 |
X | .3970 |
10.20mm | .4106 |
Y | .4040 |
13/32" | .4062 |
10.40mm | .4094 |
Z | .4130 |
10.50mm | .4134 |
10.60mm | .4173 |
27/64" | .4219 |
10.80mm | .4252 |
10.90mm | .4291 |
11.00mm | .4331 |
7/16" | .4375 |
29/64" | .4531 |
15/32" | .4688 |
12.00mm | .4724 |
31/64" | .4844 |
12.50mm | .4921 |
1/2" | .5000 |
13.00mm | .5118 |
33/64" | .5156 |
17/32" | .5312 |
35/64" | .5469 |
14.00mm | .5512 |
9/16" | .5625 |
14.50mm | .5709 |
37/64" | .5781 |
15.00mm | .5906 |
19/32" | .5938 |
39/64" | .6094 |
15.50mm | .6102 |
5/8" | .6250 |
16.00mm | .6299 |
41/64" | .6406 |
16.50mm | .6496 |
21/32" | .6562 |
17.00mm | .6693 |
43/64" | .6719 |
11/16" | .6875 |