Ohio Drill & Tool


Fractional Sizes

catalog page: 43
Size	Part Number	Decimal Equivalent	Overall Length	Flute Length
1/32	541002	.0313	1-3/8	1/2
3/64	541003	.0469	1-3/4	3/4
1/16	541004	.0625	1-7/8	7/8
5/64	541005	.0781	2	1
3/32	541006	.0938	2-1/4	1-1/4
7/64	541007	.1094	2-5/8	1-1/2
1/8	541008	.1250	2-3/4	1-5/8
9/64	541009	.1406	2-7/8	1-3/4
5/32	541010	.1563	3-1/8	2
11/64	541011	.1719	3-1/4	2-1/8
3/16	541012	.1875	3-1/2	2-5/16
13/64	541013	.2031	3-5/8	2-7/16
7/32	541014	.2188	3-3/4	2-1/2
15/64	541015	.2344	3-7/8	2-5/8
1/4	541016	.2500	4	2-3/4
17/64	541017	.2656	4-1/8	2-7/8
9/32	541018	.2813	4-1/4	2-15/16
19/64	541019	.2969	4-3/8	3-1/16
5/16	541020	.3125	4-1/2	3-3/16
21/64	541021	.3281	4-5/8	3-5/16
11/32	541022	.3438	4-3/4	3-7/16
23/64	541023	.3594	4-7/8	3-1/2
3/8	541024	.3750	5	3-5/8
25/64	541025	.3906	5-1/8	3-3/4
13/32	541026	.4063	5-1/4	3-7/8
27/64	541027	.4219	5-3/8	3-15/16
7/16	541028	.4375	5-1/2	4-1/16
29/64	541029	.4531	5-5/8	4-3/16
15/32	541030	.4688	5-3/4	4-5/16
31/64	541031	.4844	5-7/8	4-3/8
1/2	541032	.5000	6	4-1/2

Letter Sizes

catalog page: 43
Size	Part Number	Decimal Equivalent	Overall Length	Flute Length
A	743901	.2340	3-7/8	2-5/8
B	743902	.2380	4	2-3/4
C	743903	.2420	4	2-3/4
D	743904	.2460	4	2-3/4
E	743905	.2500	4	2-3/4
F	743906	.2570	4-1/8	2-7/8
G	743907	.2610	4-1/8	2-7/8
H	743908	.2660	4-1/8	2-7/8
I	743909	.2720	4-1/8	2-7/8
J	743910	.2770	4-1/8	2-7/8
K	743911	.2810	4-1/4	2-15/16
L	743912	.2900	4-1/4	2-15/16
M	743913	.2950	4-3/8	3-1/16
N	743914	.3020	4-3/8	3-1/16
O	743915	.3160	4-1/2	3-3/16
P	743916	.3230	4-5/8	3-5/16
Q	743917	.3320	4-3/4	3-7/16
R	743918	.3390	4-3/4	3-7/16
S	743919	.3480	4-7/8	3-1/2
T	743920	.3580	4-7/8	3-1/2
U	743921	.3680	5	3-5/8
V	743922	.3770	5	3-5/8
W	743923	.3860	5-1/8	3-3/4
X	743924	.3970	5-1/8	3-3/4
Y	743925	.4040	5-1/4	3-7/8
Z	743926	.4130	5-1/4	3-7/8

Wire Gauge Sizes

catalog page: 44
Size	Part Number	Decimal Equivalent	Overall Length	Flute Length
1	542801	.2280	3-7/8	2-5/8
2	542802	.2210	3-7/8	2-5/8
3	542803	.2130	3-3/4	2-1/2
4	542804	.2090	3-3/4	2-1/2
5	542805	.2055	3-3/4	2-1/2
6	542806	.2040	3-3/4	2-1/2
7	542807	.2010	3-5/8	2-7/16
8	542808	.1990	3-5/8	2-7/16
9	542809	.1960	3-5/8	2-7/16
10	542810	.1935	3-5/8	2-7/16
11	542811	.1910	3-1/2	2-5/16
12	542812	.1890	3-1/2	2-5/16
13	542813	.1850	3-1/2	2-5/16
14	542814	.1820	3-3/8	2-3/16
15	542815	.1800	3-3/8	2-3/16
16	542816	.1770	3-3/8	2-3/16
17	542817	.1730	3-3/8	2-3/16
18	542818	.1695	3-1/4	2-1/8
19	542819	.1660	3-1/4	2-1/8
20	542820	.1610	3-1/4	2-1/8
21	542821	.1590	3-1/4	2-1/8
22	542822	.1570	3-1/8	2
23	542823	.1540	3-1/8	2
24	542824	.1520	3-1/8	2
25	542825	.1495	3	1-7/8
26	542826	.1470	3	1-7/8
27	542827	.1440	3	1-7/8
28	542828	.1405	2-7/8	1-3/4
29	542829	.1360	2-7/8	1-3/4
30	542830	.1285	2-3/4	1-5/8
31	542831	.1200	2-3/4	1-5/8
32	542832	.1160	2-3/4	1-5/8
33	542833	.1130	2-5/8	1-1/2
34	542834	.1110	2-5/8	1-1/2
35	542835	.1100	2-5/8	1-1/2
36	542836	.1065	2-1/2	1-7/16
37	542837	.1040	2-1/2	1-7/16
38	542838	.1015	2-1/2	1-7/16
39	542839	.0995	2-3/8	1-3/8
40	542840	.0980	2-3/8	1-3/8
41	542841	.0960	2-3/8	1-3/8
42	542842	.0935	2-1/4	1-1/4
43	542843	.0890	2-1/4	1-1/4
44	542844	.0860	2-1/8	1-1/8
45	542845	.0820	2-1/8	1-1/8
46	542846	.0810	2-1/8	1-1/8
47	542847	.0785	2	1
48	542848	.0760	2	1
49	542849	.0730	2	1
50	542850	.0700	2	1
51	542851	.0670	2	1
52	542852	.0635	1-7/8	7/8
53	542853	.0595	1-7/8	7/8
54	542854	.0550	1-7/8	7/8
55	542855	.0520	1-7/8	7/8
56	542856	.0465	1-3/4	3/4
57	542857	.0430	1-3/4	3/4
58	542858	.0420	1-5/8	11/16
59	542859	.0410	1-5/8	11/16
60	542860	.0400	1-5/8	11/16
61	542861	.0390	1-5/8	11/16
62	542862	.0380	1-1/2	5/8
63	542863	.0370	1-1/2	5/8
64	542864	.0360	1-1/2	5/8
65	542865	.0350	1-1/2	5/8
66	542866	.0330	1-3/8	1/2
67	542867	.0320	1-3/8	1/2
68	542868	.0310	1-3/8	1/2
69	542869	.0292	1-3/8	1/2
70	542870	.0280	1-1/4	3/8