Page 31 - Michigan Drill

Fast Spiral Jobber Length Drills

High Speed Steel
List No. 300F – Bright Finish, 118° Point
These drills are designed primarily for drilling in nonferrous
materials such as aluminum, zinc die cast, and some plastics.
They are successfully used in mild steel deep holes where
chip packing occurs with standard helix drills.
Letter Sizes HOLE MAKING

Decimal Flute Overall Package Price Decimal Flute Overall Package Price
Size Size
Equivalent Length Length Quantity Each Equivalent Length Length Quantity Each
A .2340 2-5/8 3-7/8 12 3.66 N .3020 3-1/16 4-3/8 6 5.58
B .2380 2-3/4 4 12 3.66 O .3160 3-3/16 4-1/2 6 5.58
C .2420 2-3/4 4 12 3.66 P .3230 3-5/16 4-5/8 6 6.11
D .2460 2-3/4 4 12 3.66 Q .3320 3-7/16 4-3/4 6 6.33
E .2500 2-3/4 4 12 2.97 R .3390 3-7/16 4-3/4 6 6.47
F .2570 2-7/8 4-1/8 12 3.76 S .3480 3-1/2 4-7/8 6 7.06
G .2610 2-7/8 4-1/8 12 4.29 T .3580 3-1/2 4-7/8 6 7.56
H .2660 2-7/8 4-1/8 12 4.29 U .3680 3-5/8 5 6 7.56
I .2720 2-7/8 4-1/8 6 4.29 V .3770 3-5/8 5 6 7.91
J .2770 2-7/8 4-1/8 6 4.60 W .3860 3-3/4 5-1/8 6 7.91
K .2810 2-15/16 4-1/4 6 5.15 X .3970 3-3/4 5-1/8 6 8.95
L .2900 2-15/16 4-1/4 6 5.15 Y .4040 3-7/8 5-1/4 6 9.61
M .2950 3-1/16 4-3/8 6 5.58 Z .4130 3-7/8 5-1/4 6 10.27

Sets
Size Pcs. Set No. Price
1/16 – 1/2 by 64 ths 29 307FF 154.44
All sets are supplied in Huot metal index

Vent Drills

High Speed – Fast Spiral

List No. 380 – Bright Finish, 118° Point
To drill vent holes in tire molds and to clean the vent
holes after tire production.
Overall
Dec.
Flute
Dec.
Flute
Overall
Dec.
Flute
Overall
Size Equiv. Length Length Price Size Equiv. Length Length Price Size Equiv. Length Length Price
Each
Each
Each
77 .0180 1 2 5.20 57 .0430 3 4 6.50 1/16 .0625 3 4-1/2 8.00
74 .0225 1 2 5.33 57 .0430 4 6 9.50 1/16 .0625 3-1/2 5 8.50
74 .0225 1 3 5.70 56 .0465 3/8 1-3/4 4.90 1/16 .0625 4 6 9.90
73 .0240 5/8 1-1/2 5.20 3/64 .0469 2 3 5.70 1/16 .0625 5 7 11.80
.7mm .0276 1-3/8 2-3/4 5.50 55 .0520 5/8 3 5.60 1/16 .0625 4 8 14.00
69 .0292 5/8 3 6.00 55 .0520 1-3/4 3 5.70 52 .0635 4 5 8.50
69 .0292 2 3 6.00 55 .0520 2-1/4 3 5.90 52 .0635 4 6 10.25
68 .0320 2 6 9.00 55 .0520 1 3-1/2 6.00 51 .0670 2 3 6.20
61 .0390 3/8 1-3/8 5.20 55 .0520 3 4 6.75 51 .0670 4 6 10.25
61 .0390 5/8 3 6.00 55 .0520 1-1/2 4-1/4 7.00 50 .0700 3 4 7.20
61 .0390 3 4-1/2 7.00 55 .0520 2-1/2 4-1/2 7.50 50 .0700 2-1/2 4-1/2 8.10
60 .0400 1-1/2 2-1/2 5.00 55 .0520 3 5 9.00 50 .0700 3 5 9.00
60 .0400 5/8 3 5.60 55 .0520 3-1/2 5 9.50 50 .0700 4 6 10.25
60 .0400 3 4 6.50 55 .0520 3-1/2 6-1/4 10.00 49 .0730 4 6 10.25
60 .0400 4 6 9.50 55 .0520 4-1/2 7 11.80 45 .0820 2 3 7.20
59 .0410 5/8 3 5.60 54 .0550 5/8 3 5.60 45 .0820 3 4 7.90
59 .0410 1 3-1/2 6.00 54 .0550 4 6 9.50 45 .0820 4 6 10.25
59 .0410 2 5 9.00 54 .0550 1 4 7.00 45 .0820 6 8 14.00
58 .0420 2 3 5.60 1.5mm .0591 2 6 9.50 3/32 .0938 2 3-1/4 5.90
58 .0420 3 4 6.50 1.5mm .0591 4 6 9.50 3/32 .0938 3 4 8.50
57 .0430 2 3 5.60 1/16 .0625 2-1/2 3-1/2 6.20 3/32 .0938 4 6 10.50
57 .0430 2-1/2 3-1/2 6.10 1/16 .0625 3 4 6.75 3/32 .0938 6 8 14.00
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