Page 63 - Michigan Drill

Fast Spiral Taper Length Drills

High Speed Steel

List No. 400F – Bright Finish, 118° Point
These drills have been especially designed for use through long
bushings or where extra length is required. They are recommended
for drilling deep holes in nonferrous materials such as aluminum,
zinc die cast, magnesium, copper and some plastics. HOLE MAKING

Letter Sizes

Decimal
Flute
Flute
Decimal
Size Equivalent Length Overall Pkg. Price Size Equivalent Length Overall Pkg. Price
Each
Length
Qty.
Length
Qty.
Each
A .2340 3-3/4 6-1/8 12 17.66 N .3020 4-1/8 6-1/2 6 20.53
B .2380 3-3/4 6-1/8 12 17.66 O .3160 4-1/8 6-1/2 6 20.53
C .2420 3-3/4 6-1/8 12 17.66 P .3230 4-1/8 6-1/2 6 20.53
D .2460 3-3/4 6-1/8 12 17.66 Q .3320 4-1/8 6-1/2 6 20.53
E .2500 3-3/4 6-1/8 12 11.25 R .3390 4-1/8 6-1/2 6 20.53
F .2570 3-7/8 6-1/4 12 17.84 S .3480 4-1/4 6-3/4 6 23.33
G .2610 3-7/8 6-1/4 12 17.84 T .3580 4-1/4 6-3/4 6 22.37
H .2660 3-7/8 6-1/4 12 18.47 U .3680 4-1/4 6-3/4 6 22.37
I .2720 3-7/8 6-1/4 6 17.84 V .3770 4-3/8 7 6 24.19
J .2770 3-7/8 6-1/4 6 17.84 W .3860 4-3/8 7 6 24.19
K .2810 3-7/8 6-1/4 6 19.23 X .3970 4-3/8 7 6 25.77
L .2900 4 6-3/8 6 19.26 Y .4040 4-3/8 7 6 25.77
M .2950 4 6-3/8 6 19.26 Z .4130 4-5/8 7-1/4 6 25.77
Parabolic Flute
Taper Length Drills

High Speed Steel

List No. 400PF – 135° Split Point
List No. 400PFT – TiN Coated, 135° Split Point
Used for deep hole drilling at higher feed rates in aluminum
alloys and other low to medium tensile strength materials

Fractional Sizes
Price Each Price Each

Dec. Flute Overall Pkg. H.S. TiN Coated Dec. Flute Overall Pkg. H.S. TiN Coated
Size Size
Equiv. Length Length Qty. 400PF 400PFT Equiv. Length Length Qty. 400PF 400PFT
1/16 .0625 1-3/4 3 12 3.60 7.08 23/64 .3594 4-1/4 6-3/4 6 18.10 30.43
5/64 .0781 2 3-3/4 12 5.06 7.16 3/8 .3750 4-1/4 6-3/4 6 17.64 29.97
3/32 .0938 2-1/4 4-1/4 12 6.03 8.13 25/64 .3906 4-3/8 7 6 18.72 35.31
7/64 .1094 2-1/2 4-5/8 12 6.53 9.35 13/32 .4062 4-3/8 7 6 18.98 35.57
1/8 .1250 2-3/4 5-1/8 12 7.44 10.26 27/64 .4219 4-5/8 7-1/4 6 18.29 37.58
9/64 .1406 3 5-3/8 12 9.93 13.98 7/16 .4375 4-5/8 7-1/4 6 16.80 38.46
5/32 .1562 3 5-3/8 12 8.99 13.04 29/64 .4531 4-3/4 7-1/2 6 23.87 43.16
11/64 .1719 3-3/8 5-3/4 12 10.55 14.60 15/32 .4688 4-3/4 7-1/2 6 24.04 43.33
3/16 .1875 3-3/8 5-3/4 12 8.98 14.05 31/64 .4844 4-3/4 7-3/4 6 26.07 45.36
13/64 .2031 3-5/8 6 12 12.10 18.91 1/2 .5000 4-3/4 7-3/4 6 25.94 45.23
7/32 .2188 3-5/8 6 12 13.03 19.84 33/64 .5156 4-3/4 8 1 39.69 58.89
15/64 .2344 3-3/4 6-1/8 12 13.05 19.86 17/32 .5312 4-3/4 8 1 40.55 59.75
1/4 .2500 3-3/4 6-1/8 12 11.07 17.88 9/16 .5625 4-7/8 8-1/4 1 42.37 61.57
17/64 .2656 3-7/8 6-1/4 12 10.44 24.60 19/32 .5938 4-7/8 8-3/4 1 48.85 68.05
9/32 .2812 3-7/8 6-1/4 6 12.97 23.26 5/8 .6250 4-7/8 8-3/4 1 51.53 70.73
19/64 .2969 4 6-3/8 6 14.82 25.11 21/32 .6562 5-1/8 9 1 37.60 84.64
5/16 .3125 4 6-3/8 6 12.97 25.30 11/16 .6875 5-3/8 9-1/4 1 66.57 91.25
21/64 .3281 4-1/8 6-1/2 6 15.14 27.47 23/32 .7188 5-5/8 9-1/2 1 70.47 95.15
11/32 .3438 4-1/8 6-1/2 6 15.14 27.47 3/4 .7500 5-7/8 9-3/4 1 76.95 101.63

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