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
 
Longboy Countersinks are used for producing center holes. The extra length allows you to work in diffuclt to reach places.  Bright
Longboy Countersinks 60 Deg.
catalog page: 49
Size Part Number Diameter of Body Diameter of Drill Length of Drill
4-1/2 x 4" 579804 3/8 9/64 9/64
4-1/2 x 5" 579805 3/8 9/64 9/64
4-1/2 x 6" 579806 3/8 9/64 9/64
1 x 3" 579813 1/8 3/64 3/64
1 x 4" 579814 1/8 3/64 3/64
1 x 5" 579815 1/8 3/64 3/64
1 x 6" 579816 1/8 3/64 3/64
2 x 3" 579823 3/16 5/64 5/64
2 x 4" 579824 3/16 5/64 5/64
2 x 5" 579825 3/16 5/64 5/64
2 x 6" 579826 3/16 5/64 5/64
3 x 4" 579834 1/4 7/64 7/64
3 x 5" 579835 1/4 7/64 7/64
3 x 6" 579836 1/4 7/64 7/64
4 x 4" 579844 5/16 1/8 1/8
4 x 5" 579845 5/16 1/8 1/8
4 x 6" 579846 5/16 1/8 1/8
5 x 4" 579854 7/16 3/16 3/16
5 x 5" 579855 7/16 3/16 3/16
5 x 6" 579856 7/16 3/16 3/16
6 x 5" 579865 1/2 7/32 7/32
6 x 6" 579866 1/2 7/32 7/32
7 x 6" 579876 5/8 1/4 1/4
8 x 6" 579886 3/4 5/16 5/16
 
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