Page 34 - Michigan Drill

Drill and Reamer Blanks

M2 – High Speed Steel
Made from hardened (Rc 63-65) M2 grade High Speed Steel and ground, these drill and
reamer blanks can be used as punches, gauges, pins or ground for special tools.
HOLE MAKING List No. 950R – Reamer Blanks
List No. 950D – Drill Blanks
up to 1/2" + .0000/ – .0003, over 1/2" + .0000/ – .0005
+.0002/ -.0000, up to 1/2" - over 1/2" +.0005/-.0000

Fractional Sizes
Price Each
Price Each
Decimal
Decimal
Size Equivalent Overall Pkg. Drill Blank Reamer Blank Size Equivalent Overall Pkg. Drill Blank Reamer Blank
Qty
Length
Length
Qty
950D
950D
950R
950R
1/64 .0156 3/4 12 1.74 2.37 33/64 .5156 6 1 22.24 —
1/32 .0312 1-3/8 12 1.74 2.37 17/32 .5312 6 1 23.32 34.07
3/64 .0469 1-3/4 12 1.89 2.58 35/64 .5469 6 1 22.24 —
1/16 .0625 1-7/8 12 1.83 2.50 9/16 .5625 6 1 24.29 35.49
5/64 .0781 2 12 1.95 2.66 37/64 .5781 6 1 27.85 —
3/32 .0938 2-1/4 12 1.89 2.58 19/32 .5938 6 1 27.85 40.69
7/64 .1094 2-5/8 12 1.95 2.66 39/64 .6094 6 1 27.34 —
1/8 .1250 2-3/4 12 1.85 2.52 5/8 .6250 6 1 27.34 39.94
9/64 .1406 2-7/8 12 1.95 2.66 41/64 .6406 6 1 32.21 —
5/32 .1562 3-1/8 12 2.14 2.92 21/32 .6562 6 1 32.21 47.06
11/64 .1719 3-1/4 12 2.14 2.92 43/64 .6719 6 1 35.30 —
3/16 .1875 3-1/2 12 2.40 3.27 11/16 .6875 6 1 35.30 51.57
13/64 .2031 3-5/8 12 3.13 4.27 45/64 .7031 6 1 35.30 —
7/32 .2188 3-3/4 12 3.15 4.30 23/32 .7188 6 1 35.30 51.57
15/64 .2344 3-7/8 12 3.54 4.83 47/64 .7344 6 1 36.58 —
1/4 .2500 4 12 3.66 4.99 3/4 .7500 6 1 36.58 53.44
17/64 .2656 4-1/8 12 4.15 5.66 49/64 .7656 6 1 39.92 —
9/32 .2812 4-1/4 6 4.48 6.11 25/32 .7812 6 1 39.92 —
19/64 .2969 4-3/8 6 4.98 6.79 51/64 .7969 6 1 42.52 —
5/16 .3125 4-1/2 6 4.88 6.65 13/16 .8125 6 1 42.52 62.12
21/64 .3281 4-5/8 6 5.64 7.69 53/64 .8281 6 1 47.18 —
11/32 .3438 4-3/4 6 6.05 8.25 27/32 .8438 6 1 47.18 —
23/64 .3594 4-7/8 6 6.80 9.27 55/64 .8594 6 1 50.07 —
3/8 .3750 5 6 7.13 9.72 7/8 .8750 6 1 50.07 73.15
25/64 .3906 5-1/8 6 7.77 10.60 57/64 .8906 6 1 54.48 —
13/32 .4062 5-1/4 6 8.42 11.48 29/32 .9062 6 1 54.48 —
27/64 .4219 5-3/8 6 9.43 12.86 59/64 .9219 6 1 57.82 —
7/16 .4375 5-1/2 6 10.38 14.15 15/16 .9375 6 1 57.82 84.48
29/64 .4531 5-5/8 6 10.94 14.92 61/64 .9531 6 1 60.13 —
15/32 .4688 5-3/4 6 11.12 15.16 31/32 .9688 6 1 60.13 —
31/64 .4844 5-7/8 6 12.61 17.20 63/64 .9844 6 1 63.36 92.57
1/2 .5000 6 6 12.71 17.33 1 1.0000 6 1 63.36 92.57
Letter Sizes
Price Each Price Each
Decimal Overall Pkg. Drill Blank Reamer Blank Decimal Overall Pkg. Drill Blank Reamer Blank
Size Size
Equivalent Length Qty 950D 950R Equivalent Length Qty 950D 950R
A .2340 3-7/8 12 3.70 5.05 N .3020 4-3/8 6 5.12 6.98
B .2380 4 12 3.70 5.05 O .3160 4-1/2 6 5.06 6.90
C .2420 4 12 3.70 5.05 P .3230 4-5/8 6 5.45 7.43
D .2460 4 12 3.70 5.05 Q .3320 4-3/4 6 5.45 7.43
E .2500 4 12 3.66 4.99 R .3390 4-3/4 6 6.17 8.41
F .2570 4-1/8 12 4.12 5.62 S .3480 4-7/8 6 7.03 9.59
G .2610 4-1/8 12 4.12 5.62 T .3580 4-7/8 6 7.03 9.59
H .2660 4-1/8 12 4.12 5.62 U .3680 5 6 7.46 10.17
I .2720 4-1/8 6 4.44 6.05 V .3770 5 6 7.46 10.17
J .2770 4-1/8 6 4.44 6.05 W .3860 5-1/8 6 8.09 11.03
K .2810 4-1/4 6 4.59 6.26 X .3970 5-1/8 6 8.09 11.03
L .2900 4-1/4 6 4.59 6.26 Y .4040 5-1/4 6 8.75 11.93
M .2950 4-3/8 6 5.12 6.98 Z .4130 5-1/4 6 8.75 11.93

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