Hertel SD63361703 Step Drill Bit 13 Sizes 1/8 to 1/2 in

Product Description

The HERTEL SD63361703 is a high-speed steel step drill bit designed to drill and ream multiple hole sizes in a single tool. Built from M2 HSS with a black oxide coating, it steps from 1/8 inch up to 1/2 inch across 13 incremental hole sizes in 1/32-inch steps. The straight flute and cylindrical shank with two flats provide positive drive and clean chip evacuation. At 2-5/8 inches overall length and a 1/4-inch shank diameter, this bit fits standard drill chucks and quick-change systems. It is a general-purpose bit suited for sheet metal, plastic, and light-gauge work commonly encountered in HVAC, electrical, and plumbing rough-in tasks.

This step drill bit is rated for multipurpose general-purpose applications where a range of hole sizes must be cut without changing tools. It is well suited for drilling knockout holes in electrical enclosures, sheet metal panels, plastic junction boxes, and similar thin-material substrates. The 1/32-inch step increments allow precise hole sizing across 13 diameters from 1/8 inch to 1/2 inch, making it a practical single-tool solution for trade professionals who need consistent results across varied hole sizes on the same job.

Key Features

• M2 high-speed steel construction for durability in general-purpose drilling
• Black oxide coating reduces friction and provides mild corrosion resistance
• 13 hole sizes stepped from 1/8 inch to 1/2 inch in 1/32-inch increments
• Straight flute geometry supports clean chip removal in sheet metal and plastic
• 1/4-inch cylindrical shank with two flats for secure chuck grip and quick-change compatibility
• Compact 2-5/8 inch overall length suits use in confined spaces

Compatibility

Designed for use in standard 3-jaw drill chucks and quick-change driver systems accepting a 1/4-inch cylindrical shank. Part of the HSTH-OX series. Suitable for drilling thin-material substrates including sheet metal, plastic, and light-gauge panels.

Installation Notes

Step drill bits of this type are installed by electricians, HVAC technicians, and plumbers for creating clean, sized holes in thin materials. Secure the workpiece before drilling and use consistent, moderate feed pressure to allow each step to size the hole cleanly. Lubrication is recommended when drilling steel to extend tool life. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.