Hertel SD6560627 Step Drill Bit 6-step Hss Black Oxide

Product Description

The HERTEL SD6560627 is a 6-step high-speed steel step drill bit designed for drilling multiple hole sizes with a single tool. It steps from 3/16 inch up to 1/2 inch in 1/16-inch increments, covering six hole diameters in one operation. The M2 HSS construction with black oxide finish provides wear resistance and reduced friction during general-purpose drilling. The cylindrical shank measures 1/4 inch in diameter and features a single flat for secure chuck engagement. Overall length is 3-7/32 inches. Installed by HVAC technicians, electricians, plumbers, and sheet metal workers who need clean stepped holes in thin-gauge materials without changing bits.

This step drill bit is suited for multipurpose applications including drilling knock-outs in electrical panels, sheet metal enclosures, HVAC equipment cabinets, and thin steel or aluminum plate. The quick-change designation and concave flute geometry support efficient chip evacuation and repeatable hole sizing. The 3/8-inch step length provides consistent transition between diameters. Trades that work with conduit knockouts, sensor ports, and access holes in metal enclosures will find this bit covers the most common hole sizes in a compact, general-purpose form.

Key Features

• 6 hole sizes from 3/16 inch to 1/2 inch in 1/16-inch steps
• M2 high-speed steel construction for general-purpose metal drilling
• Black oxide coating reduces friction and provides basic corrosion resistance
• Concave flute geometry aids chip clearing during stepped drilling
• 1/4-inch cylindrical shank with one flat for secure chuck seating
• Quick-change type design compatible with standard 3-jaw and quick-change chuck systems

Compatibility

Designed for use in standard 3-jaw drill chucks and quick-change chuck systems accepting a 1/4-inch cylindrical shank. Suitable for drilling sheet metal, thin steel plate, aluminum, and similar thin-gauge materials common in HVAC, electrical, and plumbing trade applications.

Installation Notes

This bit is installed and operated by licensed electricians, HVAC technicians, plumbers, and sheet metal workers. Secure the shank fully in the chuck before operation and verify the flat is engaged if using a setscrew-style quick-change adapter. Always wear eye protection and secure the workpiece before drilling. Step drill bits are intended for thin-gauge materials and should not be forced through stock thicker than the step length allows.