150mm Step Drill HSS Spiral Flute 2-Cut Cross-Ground 118° Tip 90° Step Angle Shank With 3 Flats - Ruko GmbH

Combining HSS construction, a broad 5.3–38.5 mm step range and a spiral flute with cross grind ensures fast, precise hole-making across sheet and panel work; the stepped design reduces tool changes and speeds production. Order the RUKO step drill bit directly via Metav Werkzeuge or consult our advisors for application guidance.

RUKO Step Drill Bit 5.3–38.5 mm – HSS, Spiral Flute, 11 Steps

A robust RUKO step drill bit designed for clean, efficient drilling of metric cable glands and similar applications across a wide diameter range

• HSS construction for high cutting performance
• Spiral flute with cross grind for fast chip evacuation
• Covers 5.3–38.5 mm in 11 precise steps
• Shank with three flats for secure clamping

Faster holemaking with consistent cutting performance

The HSS design in this stepped drill provides a reliable balance between toughness and cutting edge retention, delivering steady performance in production environments. The spiral flute combined with a cross grind on the cutting lips improves chip evacuation and reduces clogging, which keeps cycle times down and lowers the frequency of cleaning interruptions. By integrating multiple diameters into one tool, changeovers are minimised, offering measurable time savings and a more efficient workflow for assembly and installation tasks.

Precise stepped drilling for repeatable results

With an operative range of 5.3–38.5 mm across 11 steps, the stepped geometry ensures repeatable hole sizes without the need for multiple drills. Each step is ground to a 90° step angle and finished with a 118° tip angle, which helps centre the hole and prevent wandering at the start of the cut. The shank includes three flats to secure the bit in chucks or collets, improving concentricity and reducing slippage under load. These design choices translate into accurate hole diameters and reduced rework for panel and gland installations.

Robust design tailored for workshop reliability

The two cutting-edge configuration and the spiral-nuted flute support continuous removal of material while maintaining a clean cut surface, which benefits downstream processes such as sealing or cable insertion. Built for repetitive use, the stepped drill reduces tool inventory and simplifies drill selection for technicians and purchasing departments alike. Paired with Metav Werkzeuge’s supply chain and quality filter in Emmerich, the tool becomes a dependable component of a workshop’s long-term tool set-up.

Contact Metav Werkzeuge in Emmerich at +49 2822 7131930 or info@metav-werkzeuge.com for specific application advice and prompt supply of the RUKO step drill bit.

Technical data

• Article number: 4000601760NW
• Item designation: RUKO step drill bit 5.3–38.5 mm HSS spiral flute 2 cutting edges 11 steps
• Manufacturer: Ruko GmbH
• Packaging unit: 1

Core measurements

• Diameter range: 5.3–38.5 mm
• Tip angle: 118°
• Step angle: 90°
• Number of cutting edges: 2
• Step count: 11

Special features

• HSS material
• Spiral flute (spiral-nuted)
• Cross-ground cutting lips
• Shank with three flats
• Designed for metric cable glands

FAQ

What diameter range does the step drill cover?
The step drill covers a diameter range of 5.3–38.5 mm, arranged across 11 distinct steps for versatile hole sizes.

Is the bit suitable for drilling metric cable glands?
Yes, the RUKO step drill bit is specified for metric cable gland applications and is optimised for clean hole edges in that use case.

How does the spiral flute improve drilling?
The spiral flute promotes rapid chip evacuation, helping to maintain cutting performance and minimise clogging during continuous operation.

What clamping options suit the shank design?
The shank’s three flats provide secure clamping in standard chucks and collets, improving concentricity and reducing the risk of slippage.

What are the important angles to note on this drill?
Key angles are a 118° tip angle for reliable centring and a 90° step angle, both contributing to consistent hole geometry.

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