Helical Step Drill

High Performance Drilling

Proprietary step design eliminates delamination and/or burr on exit

Improved hole finish

Can be used in composite and metal stacked materials

Made from solid carbide and coated for optimal tool life

For use in both hand and CNC operations

Helical Step Dril

Size	D1	OAL 4''	OAL 6''
#40	0.0980	STDRMR0980C0-4	STDRMR0980C0-6
1/8	0.1250	STDRMR1250C0-4	STDRMR1250C0-6
#30	0.1285	STDRMR1285C0-4	STDRMR1285C0-6
9/64	0.1406	STDRMR1406C0-4	STDRMR1406C0-6
5/32	0.1563	STDRMR1563C0-4	STDRMR1563C0-6
#21	0.1590	STDRMR1590C0-4	STDRMR1590C0-6
#20	0.1610	STDRMR1610C0-4	STDRMR1610C0-6
11/64	0.1719	STDRMR1719C0-4	STDRMR1719C0-6
3/16	0.1875	STDRMR1875C0-4	STDRMR1875C0-6
#11	0.1935	STDRMR1935C0-4	STDRMR1935C0-6
#10	0.1935	STDRMR1935C0-4	STDRMR1935C0-6
#8	0.1990	STDRMR1990C0-4	STDRMR1990C0-6
#7	0.2010	STDRMR2010C0-4	STDRMR2010C0-6
13/64	0.2031	STDRMR2031C0-4	STDRMR2031C0-6
7/32	0.2188	STDRMR2188C0-4	STDRMR2188C0-6
#1	0.2280	STDRMR2280C0-4	STDRMR2280C0-6
A	0.2340	STDRMR2340C0-4	STDRMR2340C0-6
B	0.2380	STDRMR2380C0-4	STDRMR2380C0-6
1/4	0.2500	STDRMR2500C0-4	STDRMR2500C0-6