HSS Step Drills

HSS Step Drills

HSS STEP DRILLS

HSS Step Drills for drilling cylindrical holes in solid material up to a thickness of 4 ~ 5mm. Burr-free and vibration-free drilling. The tapered cutting edges of the next drill step can be used for simultaneous deburring or chamfering of the finished bore at the same time. Drilling perfectly round holes in steel, brass, copper, aluminum, wood and plastic. Drills up to 13 holes sizes with one bit. Ideal tool for sheet metal workers, electrical contractor, auto mechanics, and general contractors. Surface treatment available: White Finish, Black Oxide, Titanium Coated, Cobalt Coated, TiALN Coated

Size Range	Step No.	Shank Size
4 – 12mm x 2mm	5	6mm
4 – 12 mm x 1mm	9	6mm
4 – 20mm x 2mm	9	8mm
4 – 22mm x 2mm	10	8/10mm
4 – 30mm x 2mm	14	10mm
4 – 32mm x 2mm	15	10mm
4 – 39mm x 2-3mm	14	10mm
5 – 28mm	7	10mm
5 – 28.3mm	10	10mm
5 – 35mm x 2-3mm	13	13mm
6 – 18mm x 2mm	7	10mm
6 – 20mm x 2mm	8	10mm
6 – 24mm x 2mm	10	10mm
6 – 25mm	7	10mm
6 – 26.75mm	8	10mm
6 – 30mm x 2mm	13	10mm
6 – 30.5mm	10	10mm
6 – 32mm	8	10mm
6 – 32mm	9	10mm
6 – 37mm	12	10mm
6 – 38mm	12	10mm
6 – 40mm	16	13mm
9 – 36mm x 3mm	10	12mm
10 – 20mm x 1mm	11	10mm
12 – 20mm x 1mm	9	10mm
12.5 – 30.5mm	7	12mm
13 – 38mm	10	12mm
14 – 24mm x 2mm	6	13mm
14 – 25mm	7	13mm
20 – 30mm x 1mm	11	13mm
20 – 34mm x 2mm	8	13mm
30 – 40mm x 1mm	11	13mm
40 – 50mm x 1mm	11	13mm
50 – 60mm x 1mm	11	13mm
5 – 30.5mm	13	12mm
5 – 38mm	14	12mm

HSS Step Drills