Page 77 - Michigan Drill

Threaded Shank

Adapter Drills

High Speed Steel & Cobalt NAS 965
1/4-28 Threaded Shank – 135° Split Point
Long Series 2-1/8" Overall Length*
List No. 604 – High Speed Steel HOLE MAKING
List No. 604C – Cobalt Price Each Price Each
Decimal
Flute
Flute
Decimal
Size Equivalent Length H.S. Cobalt Size Equivalent Length H.S. Cobalt
604
604C
604C
604
1/16 .0625 7/8 6.47 7.39 11/64 .1719 1-1/8 6.20 7.52
51 .0670 7/8 –– 7.39 17 .1730 1-1/8 6.40 7.66
50 .0700 7/8 6.47 7.39 16 .1770 1-1/8 6.47 7.79
49 .0730 7/8 6.47 — 15 .1800 1-1/8 6.53 7.85
48 .0760 7/8 6.47 — 14 .1820 1-1/8 6.73 8.05
5/64 .0781 7/8 6.47 7.39 13 .1850 1-1/8 6.86 8.18
46 .0810 7/8 6.86 — 3/16 .1875 1-1/8 7.00 8.32
45 .0820 7/8 6.86 — 12 .1890 1-1/8 7.13 8.38
43 .0890 7/8 6.86 7.79 11 .1910 1-1/8 7.39 8.58
42 .0935 7/8 6.86 — 10 .1935 1-1/8 7.46 8.65
3/32 .0938 7/8 6.86 — 8 .1990 1-1/8 7.52 8.71
41 .0960 7/8 6.86 — 13/64 .2031 1-1/8 7.59 —
40 .0980 7/8 4.95 6.07 5 .2055 1-1/8 7.59 8.91
39 .0995 7/8 5.15 — 4 .2090 1-1/8 7.66 —
38 .1015 7/8 5.15 6.20 3 .2130 1-1/8 7.66 9.11
7/64 .1094 7/8 5.15 6.20 7/32 .2188 1-1/8 7.79 9.90
35 .1100 7/8 5.15 — 2 .2210 1-1/8 7.85 10.56
34 .1110 7/8 5.21 — 15/64 .2340 1-1/8 — 10.60
33 .1130 7/8 5.28 — C .2420 1-1/8 7.92 10.69
32 .1160 7/8 5.28 — D .2460 1-1/8 8.45 10.82
31 .1200 7/8 5.41 — 1/4 .2500 1-1/8 8.51 10.82
1/8 .1250 7/8 5.41 6.47 6.40mm .2520 1-1/8 9.00 —
30 .1285 7/8 5.54 6.47 H .2660 1-1/8 9.24 —
29 .1360 1-1/8 5.61 6.53 F .2570 1-1/8 9.24 —
28 .1405 1-1/8 5.61 6.53 I .2720 1-1/8 9.24 —
9/64 .1406 1-1/8 5.61 6.53 J .2770 1-1/8 9.37 —
27 .1440 1-1/8 5.68 6.60 K .2811 1-1/8 9.37 —
26 .1470 1-1/8 5.74 — 9/32 .2812 1-1/8 9.37 —
25 .1495 1-1/8 5.81 — M .2950 1-1/8 9.90 —
24 .1520 1-1/8 5.94 6.93 5/16 .3125 1-1/8 13.20 13.86
23 .1540 1-1/8 5.94 6.93 O .3160 1-1/8 14.52 17.16
5/32 .1562 1-1/8 5.94 6.93 21/64 .3281 1-1/8 18.48 21.12
21 .1590 1-1/8 5.94 6.93 R .3390 1-1/8 19.14 22.44
20 .1610 1-1/8 5.94 6.93 11/32 .3438 1-1/8 19.80 26.14
19 .1660 1-1/8 6.07 7.13 3/8 .3750 1-1/8 20.13 25.74
18 .1695 1-1/8 6.14 7.26 W .3860 1-1/8 21.12 —
* O.A.L. Not including threads

Extra Long Series 3" Overall Length*
List No. 605 – High Speed Steel
Decimal
Decimal
Flute
Flute
Size Equivalent Length Price Size Equivalent Length Price
Each
Each
3/32 .0938 1-1/4 11.56 11 .1910 2-5/16 10.22
30 .1285 1-5/8 8.20 7/32 .2188 2-5/16 11.50
5/32 .1562 2 9.75 F .2570 2-5/16 12.80
20 .1610 2 8.91 19/64 .2969 2-5/16 20.10
3/16 .1875 2-5/16 10.22 5/16 .3125 2-5/16 21.26
* O.A.L. Not including threads
10-32 Threaded Shank – 135° Split Point
List No. 609 – High Speed Steel
Decimal Flute Overall Price Decimal Flute Overall Price
Size Size
Equivalent Length Length* Each Equivalent Length Length* Each
10 .1935 1-5/8 2-1/4 7.46 21 .1590 1-3/8 1-15/16 5.95
11 .1910 9/16 1-1/4 6.60 30 .1285 1/2 1 4.60
13 .1850 9/16 1-1/4 6.41 30 .1285 9/16 1-1/4 5.16
20 .1610 9/16 1-1/4 5.28 1/8 .1250 3/4 1 5.02
20 .1610 1-1/4 2 5.95 40 .0980 1-3/8 1-15/16 4.97
* O.A.L. Not including threads
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