IRWIN 15103ZR High-Speed Steel Step Drill Bit

The IRWIN Step Drill Bit 15103ZR is used for drilling stepped holes in thin materials like sheet metal, plastic, and wood. Its TiN-coated HSS construction provides wear resistance and extends tool life. The 1/4" to 3/4" range suits electrical, plumbing, and HVAC applications where clean, burr-free holes are needed.

The IRWIN Step Drill Bit 15103ZR has a 1/4" to 3/4" drilling range, is made of TiN-coated high-speed steel (HSS), and features a 3-flats shank for secure chuck grip. It is not impact rated. The manufacturer part number is 15103ZR. This bit is designed for general-purpose step drilling in thin materials.

You can source the IRWIN Step Drill Bit 15103ZR through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time. We supply genuine IRWIN tools to procurement teams and maintenance professionals internationally.

Select the IRWIN step drill bit size based on the final hole diameter needed. The 15103ZR covers 1/4" to 3/4" in stepped increments. For larger holes, choose a bit with a wider range. Ensure the material thickness does not exceed the step depth. Always use cutting fluid for metal to prolong bit life and achieve clean cuts.