Hertel SDD43274554 Step Drill Bit 12 Sizes Hss Tin

Product Description

The HERTEL SDD43274554 is a high-speed steel step drill bit designed to drill and ream multiple hole sizes in a single tool. The TiN (Titanium Nitride) coating extends tool life by reducing friction and improving wear resistance. With 12 hole sizes ranging from 6 mm to 37 mm and a 5 mm step length between sizes, this bit is built for sheet metal, electrical panels, and thin-material fabrication work. The 13 mm round shank with three flats prevents slipping in the chuck. Machinists, electricians, and sheet metal workers reach for step drill bits like this to eliminate repeated bit changes on the same workpiece.

This step drill bit is suited for use on sheet metal, aluminum, plastic, and other thin-stock materials in both residential and commercial trade applications. Electricians commonly use step drill bits when punching knockouts in electrical enclosures and junction boxes. Sheet metal fabricators use them during ductwork fabrication and fitting installation. The wide diameter range of 6 mm to 37 mm makes this bit versatile enough to cover multiple hole sizes in a single pass without swapping tools.

Key Features

• 12 discrete hole sizes in a single bit, from 6 mm minimum to 37 mm maximum diameter
• 5 mm step length between each hole size for controlled, incremental cutting
• High-speed steel (HSS) construction for durability across ferrous and non-ferrous materials
• Titanium Nitride (TiN) coating reduces friction and extends cutting edge life
• 13 mm round shank with 3 flats prevents chuck slippage during use

Compatibility

Designed to fit drill chucks and drilling machines that accept a 13 mm round shank with three flats. Suitable for use with standard corded and heavy-duty cordless drills as well as drill presses capable of accepting this shank size.

Installation Notes

Step drill bits are installed and serviced by electricians, machinists, and sheet metal workers. Always secure the workpiece with clamps before drilling to prevent spinning. Use cutting fluid on harder metals to prolong coating life. Inspect the cutting edges and TiN coating before each use and replace the bit if chipping or coating wear is evident.