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IRWIN Step Drill Bit: 3/16" to 7/8", TiN-Coated HSS - High-Speed Steel Step Drill Bits
IRWINHigh-Speed Steel Step Drill Bits

IRWIN Step Drill Bit: 3/16" to 7/8", TiN-Coated HSS

SKU 3G-OTH-208884

Brand
IRWIN
Item
Step Drill Bit: 3/16" to 7/8", TiN-Coated HSS
Category
High-Speed Steel Step Drill Bits
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Technical Specifications

IRWIN
Manufacturer Part Number
15104
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IRWIN Products
3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is the IRWIN Step Drill Bit 15104 used for?

The IRWIN Step Drill Bit 15104 is used for drilling stepped holes in thin materials such as sheet metal, plastic, and wood. Its TiN-coated HSS construction provides wear resistance, and the 3-flats shank prevents slipping in the chuck. It is not impact rated, so use a standard drill.

What are the specifications of the IRWIN Step Drill Bit 15104?

The IRWIN Step Drill Bit 15104 has a size range of 3/16" to 7/8", is made of TiN-coated high-speed steel, and features a 3-flats shank for secure gripping. The manufacturer part number is 15104. It is not impact rated, meaning it should not be used with impact drivers.

Where to buy the IRWIN Step Drill Bit 15104 worldwide?

You can source the IRWIN Step Drill Bit 15104 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 products to procurement teams globally.

How to select the correct IRWIN step drill bit size?

To select the correct IRWIN step drill bit, match the required hole diameter to the step range. The 15104 covers 3/16" to 7/8" in 1/8" increments. For thin materials, choose a bit with a TiN coating for longer life. Always use a standard drill, as this bit is not impact rated.

Used in

Common applications for IRWIN
Wood framing and decking — IRWIN ship auger bits (e.g., SKU 4AAT6) for deep drilling in timber
Electrical and plumbing installations — IRWIN hybrid utility bits (e.g., SKU 5ELR0) for drilling through wood and thin metal
Automotive assembly and repair — IRWIN power socket adapters (e.g., SKU 55EW60) for driving sockets with impact tools
General construction fastening — IRWIN impact Torx bits (e.g., SKU 787P77) for driving screws in metal and wood
Cabinet making and furniture assembly — IRWIN power bits (e.g., SKU 55EW15) for Phillips head screws in particle board and hardwood
Maintenance and repair tasks — IRWIN insert bits (e.g., SKU 55EW26) for quick bit changes in cordless screwdrivers

IRWIN Products

3G Electric supplies IRWIN high-speed steel step drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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