Page 43 - Michigan Drill

NC/CNC Spotting Drills

High Speed Steel, Cobalt, & TiN Coated
These drills are used for perfect alignment of the follow-on tool.

Metric Sizes Standard Length

90° Point 120° Point HOLE MAKING
List No. 309 – High Speed List No. 310 – High Speed
List No. 309C – Cobalt List No. 310C – Cobalt
List No. 309T – TiN Coated List No. 310T – TiN Coated
Price Each
90° Point 120° Point
Decimal Overall Flute
Size H.S. Cobalt TiN Coated H.S. Cobalt TiN Coated
Equivalent Length Length
309 309C 309T 310 310C 310T
4.00 .1575 2-1/16 15/32 18.90 36.10 27.42 19.66 37.18 28.50
5.00 .1969 2-3/8 19/32 –– 37.70 –– –– 38.81 ––
6.00 .2362 2-19/32 5/8 20.07 38.76 30.02 21.54 39.92 31.22
8.00 .3150 3-1/8 13/16 22.50 40.56 32.64 23.40 44.76 33.94
10.00 .3937 3-1/2 1 27.90 53.24 40.46 29.02 54.84 42.08
12.00 .4724 4 1-3/16 31.50 54.86 45.68 32.76 56.52 47.52
14.00 .5512 4-1/2 1-3/8 35.10 69.26 50.90 36.52 71.34 52.94
16.00 .6299 4-1/2 1-3/8 40.50 77.46 58.74 42.12 79.78 61.08
18.00 .7087 5-1/8 1-1/2 46.80 110.09 67.86 48.68 94.50 70.58

Sets

Sizes Pcs. Description Length Set No. Price
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 High Speed – 82° Point Standard Length 311S 200.00
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 Cobalt – 82° Point Standard Length 311CS 539.22
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 High Speed – 90° Point Standard Length 309S 198.42
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 Cobalt – 90° Point Standard Length 309CS 500.35
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 High Speed – 120° Point Standard Length 310S 200.00
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 Cobalt – 120° Point Standard Length 310CS 470.95
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 High Speed – 90° Point Long Length 309LS 256.96
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 High Speed – 120° Point Long Length 310LS 262.60
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 High Speed – 90° Point Extra Long Length 309XLS 346.18
1/4, 3/8, 1/2, 5/8, 3/4, 1 6 High Speed – 120° Point Extra Long Length 310XLS 351.44
6, 8, 10, 12, 14, 16 mm 6 High Speed – 90° Point Standard Length 309SM 177.57
6, 8, 10, 12, 14, 16 mm 6 Cobalt – 90° Point Standard Length 309CSM 334.14
6, 8, 10, 12, 14, 16 mm 6 High Speed – 120° Point Standard Length 310SM 185.36
6, 8, 10, 12, 14, 16 mm 6 Cobalt – 120° Point Standard Length 310CSM 347.16
All sets are supplied in wood block

Solid Carbide

NC Spotting Drills

Designed for fast and accurate spotting on NC machines.
These drills are very rigid allowing higher speeds and feeds
List No. C809 – 90° Point
List No. C810 – 120° Point
Price Each Price Each

Decimal Flute Overall 90° 120° Decimal Flute Overall 90° 120°
Size Size
Equivalent Length Length C809 C810 Equivalent Length Length C809 C810
1/8 .1250 9/16 1-1/2 17.06 17.06 3/8 .3750 1 2-1/2 53.10 53.10
3/16 .1875 3/4 2 22.05 22.05 1/2 .5000 1-1/6 3 80.01 80.01
1/4 .2500 1 2-1/2 29.25 29.25 3/4 .7500 1-1/2 4 212.04 212.04
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