• HARDEN 614143 3-Piece Professional HSS Step Drill Bit Set
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HARDEN 3-Piece Professional HSS Step Drill Bit Set | 614143

Rs.5,635
Rs.5,635 Rs.3,445
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Description

Simplify your metalworking and fabrication projects with the HARDEN 614143 3-Piece Step Drill Bit Set. Designed for industrial efficiency, these "cone" bits allow you to drill, deburr, and enlarge holes in a single operation, eliminating the need to carry an entire index of standard twist drills.

Forged from premium High-Speed Steel (HSS) and finished with a Titanium coating, these bits stay sharp significantly longer than standard carbon steel. The dual-flute design ensures faster chip removal and a smoother cutting action, preventing the bit from "walking" or vibrating during use. Whether you are working on stainless steel, aluminum, copper, or PVC, the laser-etched size markings allow for precise depth control, ensuring you hit the exact diameter every time.

Key Features & Benefits:

  • 3-Piece Industrial Set: Covers a wide range of hole diameters from 4mm up to 32mm, providing total versatility for electrical and mechanical tasks.

  • Titanium Nitride (TiN) Coating: Reduces friction and heat buildup, extending the life of the cutting edges even during high-speed operation.

  • Split-Point Tip: Self-centering design starts on contact without a center punch, providing "no-walk" drilling accuracy.

  • Dual-Flute Geometry: Engineered for rapid chip evacuation and a cleaner, burr-free finish on the exit side of the material.

  • Laser-Etched Sizes: Permanent, easy-to-read metric size markings inside the flutes for pinpoint accuracy.

  • Universal Hex/Tri-Flat Shank: Designed to fit securely in all standard drill chucks, preventing slippage under high torque.

Technical Specifications:

  • Model Number: 614143

  • Material: Forged High-Speed Steel (HSS)

  • Surface Treatment: Titanium Coated

  • Sizes Included: * 4–12mm (9 steps)

    • 4–20mm (9 steps)

    • 4–32mm (15 steps)

  • Application: Thin Metal Sheets (Up to 5mm), Aluminum, PVC, Wood, and Copper.

Ideal For:

  • Electrical Work: Knocking out perfectly sized holes in junction boxes and distribution panels.

  • HVAC Installation: Drilling access ports in ductwork and air conditioning housings.

  • Automotive Fabrication: Creating clean holes in body panels and brackets for custom wiring.

  • Home DIY: A versatile tool for any project involving thin sheet materials.