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
 

Slow Spiral Jobber Drills

Low helix drills are designed for drilling primarily in brass. The wide flutes give better chip removal and less pulling upon entering the material. 118 deg. standard point.

Fractional Sizes
catalog page: 11
Size Part Number Decimal Equivalent Overall Length Flute Length
1/64 514001 .0156 3/4 3/16
1/32 514002 .0313 1-3/8 1/2
3/64 514003 .0469 1-3/4 3/4
1/16 514004 .0625 1-7/8 7/8
5/64 514005 .0781 2 1
3/32 514006 .0938 2-1/4 1-1/4
7/64 514007 .1094 2-5/8 1-1/2
1/8 514008 .1250 2-3/4 1-5/8
9/64 514009 .1406 2-7/8 1-3/4
5/32 514010 .1563 3-1/8 2
11/64 514011 .1719 3-1/4 2-1/8
3/16 514012 .1875 3-1/2 2-5/16
13/64 514013 .2031 3-5/8 2-7/16
7/32 514014 .2188 3-3/4 2-1/2
15/64 514015 .2344 3-7/8 2-5/8
1/4 514016 .2500 4 2-3/4
17/64 514017 .2656 4-1/8 2-7/8
9/32 514018 .2813 4-1/4 2-15/16
19/64 514019 .2969 4-3/8 3-1/16
5/16 514020 .3125 4-1/2 3-3/16
21/64 514021 .3281 4-5/8 3-5/16
11/32 514022 .3438 4-3/4 3-7/16
23/64 514023 .3594 4-7/8 3-1/2
3/8 514024 .3750 5 3-5/8
25/64 514025 .3906 5-1/8 3-3/4
13/32 514026 .4063 5-1/4 3-7/8
27/64 514027 .4219 5-3/8 3-15/16
7/16 514028 .4375 5-1/2 4-1/16
29/64 514029 .4531 5-5/8 4-3/16
15/32 514030 .4688 5-3/4 4-5/16
31/64 514031 .4844 5-7/8 4-3/8
1/2 514032 .5000 6 4-1/2
Letter Sizes
catalog page: 11
Size Part Number Decimal Equivalent Overall Length Flute Length
A 407901 .2340 3-7/8 2-5/8
B 407902 .2380 4 2-3/4
C 407903 .2420 4 2-3/4
D 407904 .2460 4 2-3/4
E 407905 .2500 4 2-3/4
F 407906 .2570 4-1/8 2-7/8
G 407907 .2610 4-1/8 2-7/8
H 407908 .2660 4-1/8 2-7/8
I 407909 .2720 4-1/8 2-7/8
J 407910 .2770 4-1/8 2-7/8
K 407911 .2810 4-1/4 2-15/16
L 407912 .2900 4-1/4 2-15/16
M 407913 .2950 4-3/8 3-1/16
N 407914 .3020 4-3/8 3-1/16
O 407915 .3160 4-1/2 3-3/16
P 407916 .3230 4-5/8 3-5/16
Q 407917 .3320 4-3/4 3-7/16
R 407918 .3390 4-3/4 3-7/16
S 407919 .3480 4-7/8 3-1/2
T 407920 .3580 4-7/8 3-1/2
U 407921 .3680 5 3-5/8
V 407922 .3770 5 3-5/8
W 407923 .3860 5-1/8 3-3/4
X 407924 .3970 5-1/8 3-3/4
Y 407925 .4040 5-1/4 3-7/8
Z 407926 .4130 5-1/4 3-7/8
Wire Gauge Sizes
catalog page: 12
Size Part Number Decimal Equivalent Overall Length Flute Length
1 515801 .2280 3-7/8 2-5/8
2 515802 .2210 3-7/8 2-5/8
3 515803 .2130 3-3/4 2-1/2
4 515804 .2090 3-3/4 2-1/2
5 515805 .2055 3-3/4 2-1/2
6 515806 .2040 3-3/4 2-1/2
7 515807 .2010 3-5/8 2-7/16
8 515808 .1990 3-5/8 2-7/16
9 515809 .1960 3-5/8 2-7/16
10 515810 .1935 3-5/8 2-7/16
11 515811 .1910 3-1/2 2-5/16
12 515812 .1890 3-1/2 2-5/16
13 515813 .1850 3-1/2 2-5/16
14 515814 .1820 3-3/8 2-3/16
15 515815 .1800 3-3/8 2-3/16
16 515816 .1770 3-3/8 2-3/16
17 515817 .1730 3-3/8 2-3/16
18 515818 .1695 3-1/4 2-1/8
19 515819 .1660 3-1/4 2-1/8
20 515820 .1610 3-1/4 2-1/8
21 515821 .1590 3-1/4 2-1/8
22 515822 .1570 3-1/8 2
23 515823 .1540 3-1/8 2
24 515824 .1520 3-1/8 2
25 515825 .1495 3 1-7/8
26 515826 .1470 3 1-7/8
27 515827 .1440 3 1-7/8
28 515828 .1405 2-7/8 1-3/4
29 515829 .1360 2-7/8 1-3/4
30 515830 .1285 2-3/4 1-5/8
31 515831 .1200 2-3/4 1-5/8
32 515832 .1160 2-3/4 1-5/8
33 515833 .1130 2-5/8 1-1/2
34 515834 .1110 2-5/8 1-1/2
35 515835 .1100 2-5/8 1-1/2
36 515836 .1065 2-1/2 1-7/16
37 515837 .1040 2-1/2 1-7/16
38 515838 .1015 2-1/2 1-7/16
39 515839 .0995 2-3/8 1-3/8
40 515840 .0980 2-3/8 1-3/8
41 515841 .0960 2-3/8 1-3/8
42 515842 .0935 2-1/4 1-1/4
43 515843 .0890 2-1/4 1-1/4
44 515844 .0860 2-1/8 1-1/8
45 515845 .0820 2-1/8 1-1/8
46 515846 .0810 2-1/8 1-1/8
47 515847 .0785 2 1
48 515848 .0760 2 1
49 515849 .0730 2 1
50 515850 .0700 2 1
51 515851 .0670 2 1
52 515852 .0635 1-7/8 7/8
53 515853 .0595 1-7/8 7/8
54 515854 .0550 1-7/8 7/8
55 515855 .0520 1-7/8 7/8
56 515856 .0465 1-3/4 3/4
57 515857 .0430 1-3/4 3/4
58 515858 .0420 1-5/8 11/16
59 515859 .0410 1-5/8 11/16
60 515860 .0400 1-5/8 11/16
61 515861 .0390 1-5/8 11/16
62 515862 .0380 1-1/2 5/8
63 515863 .0370 1-1/2 5/8
64 515864 .0360 1-1/2 5/8
65 515865 .0350 1-1/2 5/8
66 515866 .0330 1-3/8 1/2
67 515867 .0320 1-3/8 1/2
68 515868 .0310 1-3/8 1/2
69 515869 .0292 1-3/8 1/2
70 515870 .0280 1-1/4 3/8
71 515871 .0260 1-1/4 3/8
72 515872 .0250 1-1/8 5/16
73 515873 .0240 1-1/8 5/16
74 515874 .0225 1 1/4
75 515875 .0210 1 1/4
76 515876 .0200 7/8 3/16
77 515877 .0180 7/8 3/16
78 515878 .0160 7/8 3/16
79 515879 .0145 3/4 3/16
80 515880 .0135 3/4 3/16
 
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