Page 22 - Michigan Drill

Metric Jobber Length Drills

High Speed & Cobalt
List No. 301 – H.S. Oxide Finish, 118° Point
Creates a porous layer that holds cutting oil which
HOLE MAKING List No. 301A – H.S. Bright Finish, 118° Point
provides abrasion resistance and improved chip flow.
Better chip ejection in low carbon, non-ferrous materials.
List No. 301C – Super Cobalt, HD 135° Split Point
Cobalt drills are used in drilling tough, high tensile strength
materials like stainless steels, titanium, and inconel.

Bright
Bright
Oxide Price Each Super Oxide Price Each Super
Size Dec. Flute Overall Pkg. Finish Finish Cobalt Size Dec. Flute Overall Pkg. Finish Finish Cobalt
mm Equiv. Length Length Qty. mm Equiv. Length Length Qty.
301 301A 301C 301 301A 301C
.15 .0059 3/64 3/4 12 8.08 8.08 — 2.00 .0787 1-1/8 2-1/8 12 1.58 1.58 2.84
.16 .0063 3/64 3/4 12 — 8.08 — 2.05 .0807 1-1/8 2-1/8 12 2.25 2.25 3.15
.17 .0067 1/16 3/4 12 — 7.31 — 2.10 .0827 1-1/8 2-1/8 12 1.89 1.89 3.15
.18 .0071 1/16 3/4 12 — 7.31 — 2.15 .0846 1-1/8 2-1/8 12 1.89 1.89 3.15
.19 .0075 1/16 3/4 12 5.81 5.81 — 2.20 .0866 1-1/4 2-1/4 12 1.89 1.89 3.15
.20 .0079 1/16 3/4 12 — 5.81 — 2.25 .0886 1-1/4 2-1/4 12 1.89 1.89 3.15
.21 .0083 3/32 3/4 12 — 5.81 — 2.30 .0906 1-1/4 2-1/4 12 1.89 1.89 3.15
.22 .0087 1/16 3/4 12 — 5.81 — 2.35 .0925 1-1/4 2-1/4 12 1.89 1.89 3.15
.23 .0091 3/32 3/4 12 5.81 5.81 — 2.40 .0945 1-3/8 2-3/8 12 1.89 1.89 3.15
.24 .0094 3/32 3/4 12 — 5.81 — 2.45 .0965 1-3/8 2-3/8 12 2.25 2.25 3.15
.25 .0098 5/64 3/4 12 — 4.59 — 2.50 .0984 1-3/8 2-3/8 12 1.89 1.89 2.88
.26 .0102 5/64 3/4 12 — 4.59 — 2.60 .1024 1-7/16 2-1/2 12 1.89 1.89 3.15
.27 .0106 5/64 3/4 12 — 4.15 — 2.70 .1063 1-7/16 2-1/2 12 1.89 1.89 3.15
.28 .0110 5/64 3/4 12 — 4.15 — 2.75 .1083 1-1/2 2-5/8 12 2.25 — 3.96
.29 .0114 5/64 3/4 12 4.15 4.15 — 2.80 .1102 1-1/2 2-5/8 12 2.25 2.25 3.51
.30 .0118 3/32 3/4 12 — 4.15 — 2.90 .1142 1-5/8 2-3/4 12 2.25 2.25 3.51
.32 .0126 3/32 3/4 12 4.15 4.15 — 3.00 .1181 1-5/8 2-3/4 12 1.76 1.76 3.33
.34 .0134 5/32 3/4 12 — 4.15 — 3.10 .1220 1-5/8 2-3/4 12 2.25 2.25 3.51
.35 .0138 1/8 3/4 12 — 4.15 — 3.20 .1260 1-5/8 2-3/4 12 1.98 1.98 3.51
.36 .0142 5/32 3/4 12 — 4.15 — 3.25 .1280 1-5/8 2-3/4 12 2.25 2.25 3.51
.38 .0150 3/16 3/4 12 — 4.15 — 3.30 .1299 1-3/4 2-7/8 12 1.98 1.98 3.51
.40 .0158 3/16 7/8 12 — 4.15 — 3.40 .1339 1-3/4 2-7/8 12 2.07 2.07 3.51
.42 .0165 3/16 7/8 12 — 4.15 — 3.50 .1378 1-3/4 2-7/8 12 1.79 1.79 3.51
.44 .0173 3/16 7/8 12 — 4.15 — 3.60 .1417 1-7/8 3 12 2.25 2.25 4.23
.45 .0177 3/16 7/8 12 — 4.15 — 3.70 .1457 1-7/8 3 12 2.25 2.25 4.23
.46 .0181 3/16 7/8 12 — 4.15 — 3.75 .1476 1-7/8 3 12 2.39 2.39 4.23
.48 .0189 3/16 7/8 12 4.15 4.15 — 3.80 .1496 1-7/8 3 12 2.39 — 4.23
.50 .0197 3/16 7/8 12 4.15 4.15 — 3.90 .1535 2 3-1/8 12 2.81 2.81 4.23
.55 .0217 1/4 1 12 2.52 2.52 — 4.00 .1575 2-1/8 3-1/4 12 1.98 1.98 4.23
.60 .0236 5/16 1-1/8 12 2.52 2.52 — 4.10 .1614 2-1/8 3-1/4 12 2.39 2.39 4.23
.65 .0256 3/8 1-1/4 12 2.52 2.52 — 4.20 .1654 2-1/8 3-1/4 12 2.39 2.39 4.23
.70 .0276 3/8 1-1/4 12 2.01 2.01 — 4.25 .1673 2-1/8 3-1/4 12 2.57 2.57 4.23
.75 .0295 1/2 1-3/8 12 1.80 1.80 — 4.30 .1693 2-1/8 3-1/4 12 2.61 2.61 4.23
.80 .0315 1/2 1-3/8 12 1.80 1.80 — 4.40 .1732 2-3/16 3-3/8 12 2.79 2.79 4.77
.85 .0335 5/8 1-1/2 12 1.80 1.80 — 4.50 .1772 2-3/16 3-3/8 12 2.39 2.39 4.23
.90 .0355 5/8 1-1/2 12 1.80 1.80 — 4.60 .1811 2-3/16 3-3/8 12 2.79 2.79 4.77
.95 .0374 5/8 1-1/2 12 1.80 1.80 — 4.70 .1850 2-5/16 3-1/2 12 2.97 2.97 4.77
1.00 .0394 11/16 1-5/8 12 1.80 1.80 3.02 4.75 .1870 2-5/16 3-1/2 12 2.97 2.97 5.22
1.05 .0413 11/16 1-5/8 12 1.80 1.80 3.15 4.80 .1890 2-5/16 3-1/2 12 2.97 2.97 5.49
1.10 .0433 3/4 1-3/4 12 1.89 1.29 3.15 4.90 .1929 2-7/16 3-5/8 12 2.97 2.97 5.49
1.15 .0453 3/4 1-3/4 12 1.89 — 3.15 5.00 .1969 2-7/16 3-5/8 12 2.61 2.61 5.49
1.20 .0472 7/8 1-7/8 12 1.89 1.89 3.15 5.10 .2008 2-7/16 3-5/8 12 3.33 3.33 6.12
1.25 .0492 7/8 1-7/8 12 1.89 1.89 3.15 5.20 .2047 2-1/2 3-3/4 12 3.33 3.33 6.48
1.30 .0512 7/8 1-7/8 12 1.89 1.89 3.15 5.25 .2067 2-1/2 3-3/4 12 3.33 3.33 6.75
1.35 .0531 7/8 1-7/8 12 1.89 1.89 3.15 5.30 .2087 2-1/2 3-3/4 12 3.33 3.33 6.75
1.40 .0551 7/8 1-7/8 12 1.89 1.89 3.15 5.40 .2126 2-1/2 3-3/4 12 3.33 3.33 6.75
1.45 .0571 7/8 1-7/8 12 1.89 1.89 3.15 5.50 .2165 2-1/2 3-3/4 12 3.33 3.33 5.67
1.50 .0591 7/8 1-7/8 12 1.89 1.89 3.15 5.55 .2185 2-1/2 3-3/4 12 4.10 — —
1.55 .0610 7/8 1-7/8 12 1.89 1.89 3.15 5.60 .2205 2-5/8 3-7/8 12 3.42 3.42 6.75
1.60 .0630 7/8 1-7/8 12 1.89 1.89 3.15 5.70 .2244 2-5/8 3-7/8 12 3.42 3.42 6.75
1.65 .0650 1 2 12 1.89 1.89 3.15 5.75 .2264 2-5/8 3-7/8 12 3.48 3.48 7.47
1.70 .0669 1 2 12 1.89 1.89 3.15 5.80 .2283 2-5/8 3-7/8 12 3.48 3.48 6.75
1.75 .0689 1 2 12 1.89 1.89 3.15 5.90 .2323 2-5/8 3-7/8 12 3.48 3.48 6.75
1.80 .0709 1 2 12 1.89 1.89 3.15 5.95 .2343 2-5/8 3-7/8 12 4.23 — —
1.85 .0728 1 2 12 2.08 — 3.15 6.00 .2362 2-3/4 4 12 3.11 3.11 6.12
1.90 .0748 1 2 12 2.08 2.08 3.15 6.10 .2402 2-3/4 4 12 3.69 — 7.65
1.95 .0768 1 2 12 2.08 2.08 3.15 6.20 .2441 2-3/4 4 12 3.69 3.69 7.65
Cobalt sizes with decimal equivalent smaller than .0625 are not split point.
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