Page 212 - Republic Drill

Chucking Reamers

High Speed Steel
List No. 550 – Straight Flute
For general purpose reaming to close tolerances.
List No. 551 – Right Hand Spiral Flute
REAMERS Designed for use in materials where additional shear is
necessary and to improve chip removal in blind holes.

Fractional Sizes
Price Each Price Each
Dec. Flute Overall Straight Spiral Dec. Flute Overall Straight Spiral
Size Size
Equiv. Length Length 550 551 Equiv. Length Length 550 551
1/32 .0312 1/2 2-1/2 10.90 12.77 21/32 .6562 2-1/4 9 32.14 33.64
3/64 .0469 1/2 2-1/2 11.83 12.77 43/64 .6719 2-1/4 9 36.03 39.44
1/16 .0625 1/2 2-1/2 10.76 12.78 11/16 .6875 2-1/4 9 31.87 33.64
5/64 .0781 3/4 3 9.90 10.25 45/64 .7031 2-1/4 9 37.01 39.44
3/32 .0938 3/4 3 8.51 10.25 23/32 .7188 2-1/4 9 36.94 38.14
7/64 .1094 7/8 3-1/2 9.90 10.25 47/64 .7344 2-1/2 9-1/2 36.93 38.73
1/8 .1250 7/8 3-1/2 7.64 9.73 3/4 .7500 2-1/2 9-1/2 35.44 37.45
9/64 .1406 1 4 11.83 12.78 49/64 .7656 2-1/2 9-1/2 41.42 44.67
5/32 .1562 1 4 10.74 12.78 25/32 .7812 2-1/2 9-1/2 41.43 43.00
11/64 .1719 1-1/8 4-1/2 11.83 12.78 51/64 .7969 2-1/2 9-1/2 41.42 44.67
3/16 .1875 1-1/8 4-1/2 10.76 12.78 13/16 .8125 2-1/2 9-1/2 41.43 43.00
13/64 .2031 1-1/4 5 14.28 14.75 53/64 .8281 2-1/2 9-1/2 47.00 51.53
7/32 .2188 1-1/4 5 13.86 14.42 27/32 .8438 2-1/2 9-1/2 46.98 48.24
15/64 .2344 1-1/2 6 14.28 14.75 55/64 .8594 2-5/8 10 45.87 51.53
1/4 .2500 1-1/2 6 12.21 13.86 7/8 .8750 2-5/8 10 45.88 51.53
17/64 .2656 1-1/2 6 15.93 16.43 57/64 .8906 2-5/8 10 51.71 56.45
9/32 .2812 1-1/2 6 15.93 16.43 29/32 .9062 2-5/8 10 51.71 53.56
19/64 .2969 1-1/2 6 16.82 17.74 59/64 .9219 2-5/8 10 51.71 56.45
5/16 .3125 1-1/2 6 14.84 15.38 15/16 .9375 2-5/8 10 51.71 53.56
21/64 .3281 1-1/2 6 18.19 18.40 61/64 .9531 2-5/8 10 58.14 64.02
11/32 .3438 1-1/2 6 18.19 18.40 31/32 .9688 2-5/8 10 58.16 60.45
23/64 .3594 1-3/4 7 18.19 18.40 63/64 .9844 2-3/4 10-1/2 58.14 64.02
3/8 .3750 1-3/4 7 15.93 18.06 1 1.0000 2-3/4 10-1/2 57.04 60.45
25/64 .3906 1-3/4 7 18.84 20.63 1-1/32 1.0313 2-3/4 10-1/2 65.47 71.23
13/32 .4062 1-3/4 7 19.52 20.63 1-1/16 1.0625 2-3/4 10-1/2 65.46 67.82
27/64 .4219 1-3/4 7 20.65 21.30 1-3/32 1.0938 2-7/8 11 69.93 78.57
7/16 .4375 1-3/4 7 18.84 20.30 1-1/8 1.1250 2-7/8 11 69.95 74.73
29/64 .4531 1-3/4 7 22.92 23.15 1-5/32 1.1562 2-7/8 11 78.87 89.26
15/32 .4688 1-3/4 7 22.33 23.15 1-3/16 1.1875 2-7/8 11 78.83 82.16
31/64 .4844 2 8 23.03 23.15 1-1/4 1.2500 3 11-1/2 86.64 91.17
1/2 .5000 2 8 20.65 20.87 1-5/16 1.3125 3 11-1/2 98.35 111.54
33/64 .5156 2 8 24.58 26.49 1-3/8 1.3750 3-1/4 12 100.33 114.17
17/32 .5312 2 8 24.58 26.52 1-7/16 1.4375 3-1/4 12 118.14 124.75
35/64 .5469 2 8 24.09 27.05 1-1/2 1.5000 3-1/2 12-1/2 121.88 127.27
9/16 .5625 2 8 24.05 27.09 1-9/16 1.5625 3-1/2 12-1/2 257.24 —
37/64 .5781 2 8 28.05 29.96 1-5/8 1.6250 3-5/8 13 257.24 —
19/32 .5938 2 8 28.04 29.96 1-11/16 1.6875 3-5/8 13 283.14 —
39/64 .6094 2-1/4 9 28.05 28.64 1-3/4 1.7500 4 13-1/2 283.14 —
5/8 .6250 2-1/4 9 28.04 28.64 1-7/8 1.8750 4 14 316.00 —
41/64 .6406 2-1/4 9 32.14 33.66 2 2.0000 4 14 316.00 —

Wire Gauge Sizes
Price Each Price Each
Dec. Flute Overall Straight Spiral Dec. Flute Overall Straight Spiral
Size Size
Equiv. Length Length 550 551 Equiv. Length Length 550 551
1 .2280 1-1/2 6 14.16 15.58 13 .1850 1-1/8 4-1/2 13.23 14.56
2 .2210 1-1/2 6 14.16 15.58 14 .1820 1-1/8 4-1/2 13.23 14.56
3 .2130 1-1/4 5 14.16 15.58 15 .1800 1-1/8 4-1/2 13.23 14.56
4 .2090 1-1/4 5 14.16 15.58 16 .1770 1-1/8 4-1/2 12.07 13.29
5 .2055 1-1/4 5 14.16 15.58 17 .1730 1-1/8 4-1/2 12.07 13.29
6 .2040 1-1/4 5 14.16 15.58 18 .1695 1-1/8 4-1/2 11.21 12.33
7 .2010 1-1/4 5 14.16 15.58 19 .1660 1-1/8 4-1/2 11.21 12.33
8 .1990 1-1/4 5 14.16 15.58 20 .1610 1-1/8 4-1/2 11.21 12.33
9 .1960 1-1/4 5 14.16 15.58 21 .1590 1-1/8 4-1/2 11.21 12.33
10 .1935 1-1/4 5 14.16 15.58 22 .1570 1 4 11.21 12.33
11 .1910 1-1/4 5 13.81 15.18 23 .1540 1 4 11.21 12.33
12 .1890 1-1/8 4-1/2 13.81 14.56 24 .1520 1 4 11.21 12.33
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