Spiralbohrer — Twist Drill Type N (Ø 6.1 mm, 135°, short, 5% cobalt-alloyed, HSS‑E, DIN 338)

The Spiralbohrer Twist Drill Type N is a short HSS‑E drill designed for precision drilling in metal with enhanced stability and wear resistance.

• Short design for higher stability
• 135° point angle for hard materials
• HSS‑E with 5% cobalt for wear resistance
• Fully ground shank for precise centring
• DIN 338 compliance for standardised quality

Increased Precision and Stability for Metalworking

A short Twist Drill with reduced overall length improves stability and reduces bending during operation, which is especially important when working with tougher metals. The combination of a short design and a fully ground shank ensures consistent concentricity in the chuck and cleaner holes under load. Professionals who demand repeatable, accurate results will value the greater rigidity compared with longer counterparts, making this tool well suited for demanding drilling tasks in workshop and production environments.

Material Composition and Why 5% Cobalt Matters

The HSS‑E material with 5% cobalt increases hot hardness and wear resistance, allowing the Twist Drill to retain cutting performance at higher temperatures typical when drilling stainless steel and alloyed steels. The cobalt alloy improves service life and reduces frequent regrinding cycles, so fewer tool changes are required during longer runs. For users unfamiliar with HSS‑E, it is a high‑speed steel variant alloyed for improved durability when cutting hard materials.

Optimised Geometry for Hard Materials

With a 135° point angle and Type N normal spiral geometry, this short Twist Drill is optimised for entering and cutting harder materials while reducing walking and chatter on the surface. The larger point angle reduces the tendency to dig in on the first contact and shortens the effective penetration time, which benefits drilling in stainless steel and similar alloys. For routine metal fabrication tasks where precision and tool life matter, this geometry provides a reliable balance between entry behaviour and chip evacuation.

Intended Use and Who Benefits Most

Designed primarily as a drill for metal, this Twist Drill Type N suits metalworkers, toolroom technicians and production engineers requiring reliable holes in alloyed and unalloyed steel, cast iron, non‑ferrous metals and plastics. The short execution makes it ideal for bench drills and smaller drilling machines where minimised overhang leads to better outcomes. If the application involves long reach or deep through‑holes, a different drill length should be selected to match the task.

Handling, Cooling and Regrinding Tips

To get the best lifetime from a short HSS‑E Twist Drill, use appropriate cutting speeds, steady feed and suitable coolant when machining harder alloys. The fully ground flute geometry provides sharp cutting edges and precise hole quality but can be more brittle than rolled alternatives; therefore controlled feeds and coolant reduce thermal stress and risk of breakage. When regrinding, keep the original point geometry to maintain the centring behaviour and the characteristic 135° angle for hard materials.

For precise metal drilling choose MetavCUT quality: the short Twist Drill Type N offers the stability and heat resistance that professionals value — for technical questions or personalised advice contact METAV Werkzeuge. 📧 info@metav-werkzeuge.com ☎️ +49 2822 7131930 ✔️ WhatsApp +49 170 2837271

Technical information

• Designation: Twist Drill
• Brand: MetavCUT
• SKU: 47061-FDA
• Diameter: 6.1 mm
• Spiral length: 63 mm
• Overall length: 101 mm
• Point angle: 135°
• Type: Type N
• Execution: short
• Material: HSS‑E
• Colour: 5% cobalt-alloyed
• Shank finish: fully ground
• For drilling machine: Drilling Machine
• Norm: DIN 338
• Application: Drills for metal
• Model series: Standard Line
• Manufacturer: MetavCUT
• Hersteller: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; info@metav-werkzeuge.com

FAQ

What is the Spiralbohrer Twist Drill Type N best used for?
The Spiralbohrer Twist Drill Type N by MetavCUT is primarily intended for drilling metal; its short execution and Type N geometry make it particularly suitable for precision holes in alloyed and unalloyed steels, cast iron, non‑ferrous metals and plastics.

Can the Spiralbohrer Twist Drill be used on stainless steel and hard alloys?
Yes. The Spiralbohrer Twist Drill Type N with HSS‑E material and 5% cobalt from MetavCUT is designed for higher hot hardness and wear resistance, which improves performance when drilling stainless steel and other harder alloys.

For what is a Twist Drill used?
A Twist Drill is mainly applied when machining high‑strength materials and larger drill diameters. This form is easy to regrind and withstands higher loads, which is why it is commonly used for tougher metalworking operations.

Which three drill types exist?
The main categories are metal drills, wood drills and stone/concrete drills.

Why are Twist Drills tip‑pointed (ausgespitzt)?
The tip pointing reduces the cross‑cut at the drill tip, which significantly lowers friction and therefore requires less feed force. At the same time the pointed tip centres the drill more reliably in the workpiece.

Can a Twist Drill be used to drill wood?
A metal drill can be used in wood, but guidance is poorer and the hole finish is less clean. Metal drills are easier to regrind and have lower self‑feed tendency compared with dedicated wood bits.

For which drilling depths is the Twist Drill most used?
A solid hole is typically produced with a Twist Drill. For diameters up to 20 mm and depths up to 100 mm, the Twist Drill is the most commonly used tool.

Is HSS or HSSE better?
The common belief that HSSE steels are always superior to standard HSS is not universally true. When choosing, assess whether your working conditions justify the higher initial cost of HSSE for the expected benefits.