3–14/5–20/16–30.5mm Sheet Metal Countersink Set HSS TiN 4pcs, ABS Case - Ruko GmbH

Combining HSS‑TiN durability with a secure three‑flat shank and an impact‑resistant ABS case, this set ensures reliable, burr‑reduced holes in sheet metal. Order the RUKO set directly via Metav Werkzeuge or ask our consultants for tailored advice.

RUKO Sheet Metal Step Drill Set 3–14 / 5–20 / 16–30.5 mm, HSS‑TiN, 4‑piece

A compact four‑piece step drill kit designed for clean hole enlarging and deburring in sheet metal applications

• HSS‑TiN coating for extended cutting life
• Shank with three flats for secure clamping
• Includes 30 g cutting paste for smooth drilling
• Impact‑resistant ABS case for safe storage

Faster, cleaner holes with durable HSS‑TiN cutting edges

Step drills are engineered to enlarge and de‑bur holes in thin materials without changing tools. The HSS‑TiN coating on these bits reduces friction and extends tool life, which translates directly into fewer tool changes and less downtime. With step ranges of 3–14 mm, 5–20 mm and 16–30.5 mm, the set covers a broad span of common hole diameters, enabling efficient work flows when producing multiple sizes from the same point. The step drill principle also produces a cleaner hole edge compared with conventional twist drilling, reducing the need for additional finishing.

Consistent clamping and minimal run‑out for precision results

A shank designed with three flats provides a positive seat in standard chucks and quick‑change holders, limiting slippage during operation. This secure mounting reduces radial run‑out, which helps to maintain concentricity and improves hole quality when working on thin metal sheets. The stable interface between drill and machine means fewer reworks and a predictable outcome across repetitive tasks. Where accuracy matters, mechanical features like the three‑flat shank make a tangible difference to the final fit of components.

Workshop efficiency: practical kit and ready‑to‑use accessories

The set is delivered as a four‑piece kit in an impact‑resistant ABS case, keeping tools organised and protected between jobs. Included with the drills is a 30 g cutting paste, which assists chip evacuation and reduces heat build‑up when drilling thin metal, prolonging tool life and improving surface finish. The compact cassette simplifies storage and transport, making these step drills a practical addition to a maintenance trolley or a production bench. The combination of consumable, cutting aids and protective casing streamlines the day‑to‑day workflow.

Practical applications and recommended handling

These step drills are optimised for sheet metal work and other thin materials where progressive hole enlargement is preferred. Typical users include workshop technicians, maintenance teams and metal fabricators who require a versatile set for on‑site adjustments or quick production tasks. For best results, operate at moderate speed with steady feed and apply the supplied cutting paste when working thicker or tougher sheet materials. Regular inspection for wear and prompt replacement of blunt tools will maintain performance and safety in the workplace.

Choose the RUKO HSS‑TiN step drill set via Metav Werkzeuge for dependable drilling in sheet metal; contact Metav Werkzeuge for product selection advice and local availability at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 4000601700NW
• Description: Sheet metal step drill set 3–14 / 5–20 / 16–30.5 mm HSS‑TiN
• Manufacturer: Ruko GmbH

Specifications

• Drill sizes: 3–14 mm; 5–20 mm; 16–30.5 mm
• Pieces: 4
• Cutting paste: 30 g
• Shank: three flats

Features

• HSS‑TiN coating
• Shank with 3 clamping flats
• Impact‑ and break‑resistant ABS cassette
• Supplied in protective plastic case

FAQ

What hole sizes are covered by the set?
The set provides step ranges of 3–14 mm, 5–20 mm and 16–30.5 mm, enabling progressive hole enlargement across common sheet‑metal diameters.

Is cutting lubricant included with the drills?
Yes, the kit includes a 30 g tin of cutting paste to aid chip removal and reduce heat during drilling.

What does the three‑flat shank mean for workshop use?
A shank with three flats ensures secure clamping in chucks and quick‑change holders, reducing slippage and run‑out for more consistent holes.

Can these step drills be stored in the supplied case?
The tools are supplied in an impact‑resistant ABS case, designed to protect the drills and keep the set organised between jobs.

Is the set suitable for heavy‑duty plate work?
These drills are optimised for sheet metal and thin materials; for thicker plate work, consult application notes or Metav Werkzeuge for alternative tool recommendations.

Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert‑Bosch‑Strasse 7, 71088 Holzgerlingen