Contact Us

Ohio Drill & Tool Company
23255 Georgetown Rd.

P.O. Box 154 
Homeworth, OH 44634
(330) 525-7717

(800) 826-5237
Fax: (330) 525-5432

 
Fractional Sizes
catalog page: 22
Size Part Number Decimal Equivalent Overall Length Flute Length
3/64 508003 .0469 1-3/8 1/2
1/16 508004 .0625 1-5/8 5/8
5/64 508005 .0781 1-11/16 11/16
3/32 508006 .0938 1-3/4 3/4
7/64 508007 .1094 1-13/16 13/16
1/8 508008 .1250 1-7/8 7/8
9/64 508009 .1406 1-15/16 15/16
5/32 508010 .1562 2-1/16 1
11/64 508011 .1719 2-1/8 1-1/16
3/16 508012 .1875 2-3/16 1-1/8
13/64 508013 .2031 2-1/4 1-3/16
7/32 508014 .2188 2-3/8 1-1/4
15/64 508015 .2344 2-7/16 1-5/16
1/4 508016 .2500 2-1/2 1-3/8
17/64 508017 .2656 2-5/8 1-7/16
9/32 508018 .2812 2-11/16 1-1/2
19/64 508019 .2969 2-3/4 1-9/16
5/16 508020 .3125 2-13/16 1-5/8
21/64 508021 .3281 2-15/16 1-11/16
11/32 508022 .3438 3 1-11/16
23/64 508023 .3594 3-1/16 1-3/4
3/8 508024 .3750 3-1/8 1-13/16
25/64 508025 .3906 3-1/4 1-7/8
13/32 508026 .4062 3-5/16 1-15/16
27/64 508027 .4219 3-3/8 2
7/16 508028 .4375 3-7/16 2-1/16
29/64 508029 .4531 3-9/16 2-1/8
15/32 508030 .4688 3-5/8 2-1/8
31/64 508031 .4844 3-11/16 2-3/16
1/2 508032 .5000 3-3/4 2-1/4
Wire Gauge Sizes
catalog page: 22
Size Part Number Decimal Equivalent Overall Length Flute Length
1 509801 .2280 2-7/16 1-5/16
2 509802 .2210 2-7/16 1-5/16
3 509803 .2130 2-3/8 1-1/4
4 509804 .2090 2-3/8 1-1/4
5 509805 .2055 2-3/8 1-1/4
6 509806 .2040 2-3/8 1-1/4
7 509807 .2010 2-1/4 1-3/16
8 509808 .1990 2-1/4 1-3/16
9 509809 .1960 2-1/4 1-3/16
10 509810 .1935 2-1/4 1-3/16
11 509811 .1910 2-1/4 1-3/16
12 509812 .1890 2-1/4 1-3/16
13 509813 .1850 2-3/16 1-1/8
14 509814 .1820 2-3/16 1-1/8
15 509815 .1800 2-3/16 1-1/8
16 509816 .1770 2-3/16 1-1/8
17 509817 .1730 2-3/16 1-1/8
18 509818 .1695 2-1/8 1-1/16
19 509819 .1660 2-1/8 1-1/16
20 509820 .1610 2-1/8 1-1/16
21 509821 .1590 2-1/8 1-1/16
22 509822 .1570 2-1/8 1-1/16
23 509823 .1540 2-1/16 1
24 509824 .1520 2-1/16 1
25 509825 .1495 2-1/16 1
26 509826 .1470 2-1/16 1
27 509827 .1440 2-1/16 1
28 509828 .1405 1-15/16 15/16
29 509829 .1360 1-15/16 15/16
30 509830 .1285 1-15/16 15/16
31 509831 .1200 1-7/8 7/8
32 509832 .1160 1-7/8 7/8
33 509833 .1130 1-7/8 7/8
34 509834 .1110 1-7/8 7/8
35 509835 .1100 1-7/8 7/8
36 509836 .1065 1-13/16 13/16
37 509837 .1040 1-13/16 13/16
38 509838 .1015 1-13/16 13/16
39 509839 .0995 1-13/16 13/16
40 509840 .0980 1-13/16 13/16
41 509841 .0960 1-13/16 13/16
42 509842 .0935 1-3/4 3/4
43 509843 .0890 1-3/4 3/4
44 509844 .0860 1-3/4 3/4
45 509845 .0820 1-3/4 3/4
46 509846 .0810 1-3/4 3/4
47 509847 .0785 1-11/16 11/16
48 509848 .0760 1-11/16 11/16
49 509849 .0730 1-11/16 11/16
50 509850 .0700 1-11/16 11/16
51 509851 .0670 1-11/16 11/16
52 509852 .0635 1-11/16 11/16
53 509853 .0595 1-5/8 5/8
54 509854 .0550 1-5/8 5/8
55 509855 .0520 1-5/8 5/8
56 509856 .0465 1-3/8 1/2
57 509857 .0430 1-3/8 1/2
58 509858 .0420 1-3/8 1/2
59 509859 .0410 1-3/8 1/2
60 509860 .0400 1-3/8 1/2
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