Twist Drill (Type N) — 7 mm, 135° tip, short, 5% cobalt-alloyed, HSS‑E, DIN 338 by MetavCUT

The Twist Drill Type N is a short, fully ground metalworking drill for Drilling Machine use, optimised for precise holes in hard materials and professional shop environments.

• Short design for higher stability
• 7 mm diameter for standard metal holes
• 135° tip angle for harder materials like stainless steel
• HSS‑E with 5% cobalt for improved wear resistance

Precision and stability for accurate metal holes

The short execution of this Twist Drill reduces overhang and thus significantly lowers the tendency to bend or wander during machining, delivering higher stability and improved concentricity. With a Spiral Length of 69 mm and a Total Length of 109 mm, the reduced cantilever ensures cleaner holes and better roundness when used in stationary or bench Drilling Machines. This geometry is particularly beneficial for tasks that demand repeatable accuracy and minimal rework.

Material composition and cutting behaviour for demanding tasks

Manufactured from HSS‑E with a 5% cobalt alloy, the drill provides increased hardness and thermal resistance compared with standard HSS, improving tool life under higher cutting temperatures. The fully ground flute geometry yields sharp cutting edges and excellent runout accuracy, while the 135° tip angle optimises entry into harder materials by reducing initial cutting forces. For workshop users, this means more reliable performance when drilling alloyed and unalloyed steel, cast iron and many non‑ferrous metals.

Intended uses and practical advice for best results

This Type N Twist Drill is designed primarily as a metal drill for professional metalworking applications. It is well suited for use in Drilling Machines for through‑holes and precision fits. For optimal results, a stable clamping setup and appropriate cutting fluid are recommended, especially when working with stainless steels or when long continuous cuts are needed. As the fully ground variant can be more brittle than rolled versions, controlled feed and adequate cooling extend service life and reduce breakage risk.

Who benefits from this tool

Workshops, toolrooms and metal fabricators who require repeatable, precise holes will value the balance of durability and accuracy this short HSS‑E Twist Drill offers. The combination of Type N spiral geometry and cobalt enrichment addresses the needs of professionals drilling harder materials while maintaining the option to work with various non‑ferrous metals and plastics as required.

Strongly recommended: Choose the MetavCUT Type N Twist Drill for demanding metal drilling tasks and contact METAV Werkzeuge for expert application support — eMail: info@metav-werkzeuge.com • Tel: +49 2822 7131930 • WhatsApp: +49 170 2837271

• Designation: Twist Drill
• Brand: MetavCUT
• SKU: 47070-FDA
• Diameter: 7 mm
• Total Length: 109 mm
• Spiral Length: 69 mm
• Tip Angle: 135°
• Type: Type N
• Execution: short
• Shaft Execution: fully ground
• Material: HSS‑E
• Colour: 5% cobalt-alloyed
• For: Drilling Machine
• Model Series: Standard Line
• Norm: DIN 338
• Applications: Drills for metal
• Hersteller: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; info@metav-werkzeuge.com

FAQ

What is the Twist Drill used for?
The MetavCUT Type N Twist Drill is primarily applied to the machining of high‑strength and standard steels and larger drill diameters; its short form is ideal for precision work in metal, offering easier grinding and greater resistance to mechanical stress.

Can the MetavCUT Type N Twist Drill be used in a drilling machine?
Yes, the MetavCUT Type N Twist Drill is intended for use in Drilling Machines and performs best when clamped in stable chucks or fixtures under controlled feed and with cutting fluid where applicable.

Why are twist drills point‑sharpened?
Point‑sharpening reduces the cross‑cutting edge at the tip of the Twist Drill, lowering frictional forces and therefore requiring less feed force; the sharper tip also improves centring accuracy in the workpiece.

Can a metal twist drill be used to drill wood?
A metal Twist Drill such as the MetavCUT Type N can be used in wood, but guidance and surface finish are typically inferior to dedicated wood drills; metal drills are easier to re‑grind and have lower self‑feeding tendencies.

At which drill depths is the Twist Drill most commonly used?
For solid drilling, the Twist Drill is the most frequently used tool; it is particularly common for diameters up to 20 mm and drilling depths up to 100 mm, depending on machine setup and material.

Which is better, HSS or HSSE?
The common assumption that HSSE steels are always superior to HSS is not universally true; selection should be based on actual working conditions, as HSSE may only justify higher cost under specific stress and temperature regimes.