Twist Drill — Type N Short, 6.6 mm, 135° Point, HSS‑E, 5% Cobalt‑Alloyed (DIN 338, Fully Ground)

The bold Twist Drill Type N short is designed for precision metalworking and offers enhanced stability and wear resistance for use in drilling machines and hand drills.

• Short design increases stability and precision
• 5% Cobalt‑alloyed HSS‑E for hard materials
• 135° point angle for reduced chipping in steel
• Fully ground flutes for accurate, clean holes
• Conforms to DIN 338 for short twist drills

Optimised strength for demanding metal applications

The HSS‑E composition with 5% cobalt gives the short Twist Drill improved hot hardness and wear resistance compared with standard HSS. This makes it particularly suitable for drilling alloyed and unalloyed Steel, Cast Iron, non‑ferrous metals and engineering Plastics. The shorter overall length reduces overhang and flex, resulting in higher concentricity and a lower risk of breakage when working with tougher materials. The combination of material and compact geometry therefore supports longer tool life under higher thermal and mechanical stress.

Geometry that produces cleaner, more accurate holes

A 135° point angle and fully ground flute geometry ensure reliable centring and a smoother entry into harder workpieces. The CNC grinding of the flute geometry (HSS‑G style) yields sharp cutting edges and a high runout accuracy, which produces precise, burr‑reduced holes. The flute (spiral) length of 63 mm is matched to a total length of 101 mm, optimising chip evacuation while maintaining rigidity. For projects that demand clean, dimensionally accurate bores, this ground short design offers clear advantages over rolled alternatives.

Best practice: machines, materials and typical uses

Designed as a classic Type N Twist Drill, this short variant is intended primarily for Drilling Machines but is compatible with robust hand drills when used with appropriate clamping and coolant. It excels in general metalworking tasks such as through‑holes in structural components, toolroom operations and maintenance work where stability and repeatable hole quality matter. For stainless steels and other hard alloys, use moderate speeds, steady feed and cooling to exploit the cobalt alloy’s high temperature performance.

Handling, cooling and reconditioning guidance

To preserve cutting performance, apply suitable cutting fluid for metalworking and avoid excessive speed that raises temperature rapidly. The fully ground tip provides excellent initial cutting action but can be more brittle than rolled designs; controlled feed rates and steady clamping are recommended. When regrinding is required, the ground geometry allows precise resharpening, but attention must be paid to the point angle to retain the 135° profile. For stationary and production environments, recommended use is with coolant and secure fixturing to prevent chipping and extend service life.

Strong recommendation: For precision metal drilling tasks choose the MetavCUT Twist Drill Type N short with 5% cobalt‑alloyed HSS‑E for superior stability and durability — for tailored advice or technical support contact METAV Werkzeuge directly via email at info@metav-werkzeuge.com, by phone at +49 2822 7131930 or WhatsApp at +49 170 2837271

• Designation: Twist Drill (Short, Type N)
• Brand: MetavCUT
• SKU: 47066‑FDA
• Diameter: 6.6 mm
• Point angle: 135°
• Type: Type N
• Colour / Composition: 5% cobalt‑alloyed
• Execution: Short
• Material: HSS‑E
• Shaft finish: Fully ground
• Spiral (flute) length: 63 mm
• Total length: 101 mm
• Model series: Standard Line
• Standard / Norm: DIN 338
• Suitable for: Drilling Machine (Hand Drill compatible with precautions)
• Manufacturer: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; info@metav-werkzeuge.com

FAQ

What are Twist Drills used for and when is a short Type N advantageous?
The MetavCUT Twist Drill Type N short is used primarily for machining metal; its short geometry gives increased stability and is therefore advantageous for precision holes in harder materials and applications where reduced overhang prevents bending and breakage.

Which three main drill types exist?
Common distinctions are Metal drills, Wood drills and Stone/Concrete drills; the MetavCUT Twist Drill Type N belongs to the metal drill category and is optimised for metalworking tasks.

Can the MetavCUT Twist Drill be used in a hand drill?
The MetavCUT Twist Drill Type N short can be used in a robust hand drill, but optimal results are achieved with a drilling machine; secure clamping and coolant are recommended to prevent chatter and extend tool life.

Why is the tip of a twist drill ground (pointed)?
The ground point on the MetavCUT Twist Drill reduces the chisel edge at the tip, lowering friction and required feed forces while improving centring in the workpiece, which results in easier penetration and more accurate holes.