Set Of 4 Step Drill Bits (Conical)

Name: Set of 4 Step Drill Bits (Conical)
Brand: STHOR
SKU: 4377362
Price: 65.41 AUD
Availability: OutOfStock

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€39.64

Item code: 4377362

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Specifications

Application:

steel

Diameter:

4-12 (4, 6, 8, 10, 12 mm)-4-20 (4, 6, 8, 10, 12, 14, 16, 18, 20 mm)-4-32 (4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 mm)-4-39 (4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39 mm) mm

Material:

HSS 4241

Max. cutting capacity:

4 mm

Rung quantity:

Surface finish:

coated with titanium nitride

Toolholder type:

triangle

OE Number

22617

22617

Overview

Step Drills Set of 4

The STHOR 22617 Step Drills Set is a professional-grade set of stepped drill bits designed for drilling perfectly circular holes in thin-walled materials. These bits are particularly valued by electricians, HVAC technicians, and automotive specialists because a single bit can replace an entire set of traditional twist drills, allowing for seamless hole enlargement in a single operation.

Key Features:

Material: High-Quality High-Speed Steel (HSS 4241). This material ensures the cutting edges stay sharp while providing high resistance to heat during high-speed rotation.
Surface Coating: Titanium Nitride (TiN). The characteristic gold coating significantly reduces friction, prevents material "welding" to the bit, and extends the overall service life of the tool.
Shank Type: Cylindrical (Straight). Designed for a secure fit in standard 10 mm and 13 mm drill chucks.
Flute Design: Straight Flute. This design provides a robust cutting edge and simplifies the sharpening process, ensuring clean debris removal in sheet metals.
Graduation: Each step is clearly laser-marked with the diameter, allowing the operator to monitor the hole size accurately during the drilling process.

Set Contents:

This 4-piece kit provides a comprehensive range of diameters, from small precision pilot holes to large conduit openings:

Bit 1: 3 mm to 12 mm (Steps: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 mm)
Bit 2: 4 mm to 12 mm (Steps: 4, 6, 8, 10, 12 mm)
Bit 3: 4 mm to 20 mm (Steps: 4, 6, 8, 10, 12, 14, 16, 18, 20 mm)
Bit 4: 4 mm to 32 mm (Steps: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32 mm)

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