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IRWIN Step Drill Bit: 5 mm to 35 mm, Black Oxide HSS - High-Speed Steel Step Drill Bits
IRWINHigh-Speed Steel Step Drill Bits

IRWIN Step Drill Bit: 5 mm to 35 mm, Black Oxide HSS

IRWIN High-Speed Steel Step Drill Bits.

SKU 3G-OTH-208917

Also listed as: 11105 ZR · 11105-ZR

Brand
IRWIN
Item
Step Drill Bit: 5 mm to 35 mm, Black Oxide HSS
Category
High-Speed Steel Step Drill Bits
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Local availability & support

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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

IRWIN
Manufacturer Part Number
11105ZR

Technical Documents

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IRWIN Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

IRWIN High-Speed Steel Step Drill Bits.

Frequently Asked Questions

What is the IRWIN 11105ZR step drill bit used for?

The IRWIN 11105ZR step drill bit is used for drilling progressively larger holes in thin materials like sheet metal, plastic, and wood. Its 5 mm to 35 mm range and black oxide HSS construction suit maintenance, fabrication, and electrical work where clean, burr-free holes are needed.

What are the specifications of the IRWIN 11105ZR step drill bit?

The IRWIN 11105ZR step drill bit has a 5 mm to 35 mm diameter range, black oxide high-speed steel (HSS) construction, and a 3-flats shank for secure chuck grip. It is not impact rated. The manufacturer part number is 11105ZR.

Where to buy the IRWIN 11105ZR step drill bit worldwide?

3G Electric supplies the IRWIN 11105ZR step drill bit worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this HSS step drill bit.

How to select the right IRWIN step drill bit size?

Select an IRWIN step drill bit like the 11105ZR by matching its diameter range (5 mm to 35 mm) to your hole size needs. For thin materials, choose a bit with a 3-flats shank to prevent slipping. Always verify the material type and that the bit is not impact rated for your tool.

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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