Page 16 - Michigan Drill

Heavy Duty Jobber Length Drills

High Speed Oxide Finish & Cobalt
List No. X300SB – 135° Split Point, H.D. Web Construction
HOLE MAKING List No. X300C – Cobalt, 135° Split Point, H.D. N A S 0 7
These drills are made with a heavy web construction
and may be used with heavier feeds in harder materials,
because of torsional strength and a 135° split point, this drill
is popular in hand held drilling applications to reduce breakage
and eliminate skidding or walking.
A.I. . A
Cobalt drills are used in drilling tough, high tensile strength
materials like Stainless Steels, Titanium, and Inconel.

Fractional Sizes
Price Each Price Each
Size Dec. Flute Overall Pkg. H.S. Cobalt Size Dec. Flute Overall Pkg. H.S. Cobalt
Equiv. Length Length Qty. X300SB X300C Equiv. Length Length Qty. X300SB X300C
3/64 .0469 3/4 1-3/4 12 .76 1.20 19/64 .2969 3-1/16 4-3/8 6 2.34 4.07
1/16 .0625 7/8 1-7/8 12 .83 1.16 5/16 .3125 3-3/16 4-1/2 6 2.46 4.38
5/64 .0781 1 2 12 .83 1.14 21/64 .3281 3-5/16 4-5/8 6 2.71 4.87
3/32 .0938 1-1/4 2-1/4 12 .83 1.14 11/32 .3438 3-7/16 4-3/4 6 3.04 5.23
7/64 .1094 1-1/2 2-5/8 12 .86 1.20 23/64 .3594 3-1/2 4-7/8 6 3.35 6.23
1/8 .1250 1-5/8 2-3/4 12 .87 1.39 3/8 .3750 3-5/8 5 6 3.54 6.11
9/64 .1406 1-3/4 2-7/8 12 .92 1.43 25/64 .3906 3-3/4 5-1/8 6 3.96 6.84
5/32 .1562 2 3-1/8 12 .94 1.63 13/32 .4062 3-7/8 5-1/4 6 4.13 7.20
11/64 .1719 2-1/8 3-1/4 12 .97 1.74 27/64 .4219 3-15/16 5-3/8 6 4.59 7.91
3/16 .1875 2-5/16 3-1/2 12 1.14 1.97 7/16 .4375 4-1/16 5-1/2 6 4.76 8.10
13/64 .2031 2-7/16 3-5/8 12 1.29 2.26 29/64 .4531 4-3/16 5-5/8 6 5.33 9.83
7/32 .2188 2-1/2 3-3/4 12 1.41 2.46 15/32 .4688 4-5/16 5-3/4 6 5.64 9.94
15/64 .2344 2-5/8 3-7/8 12 1.51 2.63 31/64 .4844 4-3/8 5-7/8 6 5.97 10.83
1/4 .2500 2-3/4 4 12 1.53 2.74 1/2 .5000 4-1/2 6 6 6.04 11.09
17/64 .2656 2-7/8 4-1/8 12 1.95 3.29 35/64 .5468 4-3/16 6-5/8 1 –– 28.00
9/32 .2812 2-15/16 4-1/4 6 2.12 3.43 9/16 .5625 4-13/16 6-5/8 1 –– 32.00
Sizes with decimal equivalent smaller than .0625 are not split point.
Wire Gauge Sizes
Price Each Price Each
Dec.
H.S.
Flute
Flute
H.S.
Dec.
Size Equiv. Length Overall X300SB Cobalt Size Equiv. Length Overall X300SB Cobalt
Length
X300C
Length
X300C
1 .2280 2-5/8 3-7/8 1.59 3.19 31 .1200 1-5/8 2-3/4 .86 1.52
2 .2210 2-5/8 3-7/8 1.59 3.19 32 .1160 1-5/8 2-3/4 .86 1.52
3 .2130 2-1/2 3-3/4 1.50 3.00 33 .1130 1-1/2 2-5/8 .86 1.41
4 .2090 2-1/2 3-3/4 1.50 3.00 34 .1110 1-1/2 2-5/8 — 1.41
5 .2055 2-1/2 3-3/4 1.50 3.00 35 .1100 1-1/2 2-5/8 .86 1.41
6 .2040 2-1/2 3-3/4 1.50 3.00 36 .1065 1-7/16 2-1/2 .86 1.41
7 .2010 2-7/16 3-5/8 1.29 2.56 37 .1040 1-7/16 2-1/2 .86 1.41
8 .1990 2-7/16 3-5/8 1.33 2.56 38 .1015 1-7/16 2-1/2 .86 1.32
9 .1960 2-7/16 3-5/8 1.33 2.56 39 .0995 1-3/8 2-3/8 .86 1.32
10 .1935 2-7/16 3-5/8 1.33 2.56 40 .0980 1-3/8 2-3/8 .84 1.32
11 .1910 2-5/16 3-1/2 1.25 2.56 41 .0960 1-3/8 2-3/8 .86 1.32
12 .1890 2-5/16 3-1/2 1.25 2.49 42 .0935 1-1/4 2-1/4 — 1.32
13 .1850 2-5/16 3-1/2 1.22 2.30 43 .0890 1-1/4 2-1/4 — 1.32
14 .1820 2-3/16 3-3/8 1.22 2.30 44 .0860 1-1/8 2-1/8 — 1.32
15 .1800 2-3/16 3-3/8 1.22 2.30 45 .0820 1-1/8 2-1/8 .86 1.32
16 .1770 2-3/16 3-3/8 1.22 2.24 46 .0810 1-1/8 2-1/8 –– 1.32
17 .1730 2-3/16 3-3/8 1.22 2.24 47 .0785 1 2 –– 1.32
18 .1695 2-1/8 3-1/4 1.01 2.09 48 .0760 1 2 –– 1.32
19 .1660 2-1/8 3-1/4 1.01 2.03 49 .0730 1 2 –– 1.32
20 .1610 2-1/8 3-1/4 .98 2.03 50 .0700 1 2 –– 1.32
21 .1590 2-1/8 3-1/4 .98 2.03 51 .0670 1 2 –– 1.32
22 .1570 2 3-1/8 .98 2.03 52 .0635 7/8 1-7/8 –– 1.32
23 .1540 2 3-1/8 .98 2.03 53 .0595 7/8 1-7/8 –– 1.32
24 .1520 2 3-1/8 .98 2.03 54 .0550 7/8 1-7/8 –– 1.32
25 .1495 1-7/8 3 — 1.80 55 .0520 7/8 1-7/8 –– 1.32
26 .1470 1-7/8 3 .98 1.80 56 .0465 3/4 1-3/4 –– 1.38
27 .1440 1-7/8 3 .92 1.80 57 .0430 3/4 1-3/4 –– 1.38
28 .1405 1-3/4 2-7/8 .86 1.80 58 .0420 11/16 1-5/8 –– 1.38
29 .1360 1-3/4 2-7/8 — 1.80 59 .0410 11/16 1-5/8 –– 1.38
30 .1285 1-5/8 2-3/4 .81 1.52 60 .0400 11/16 1-5/8 –– 1.33
Sizes with decimal equivalent smaller than .0625 are not split point.
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