Twist Drill — Short Twist Drill Ø 7.7 mm, 135° Tip, Type N, Bright finished, Short, HSS‑G, DIN 338

The Twist Drill is a short Type N metalworking drill designed for precision drilling in hard materials and suited for use with a Drilling Machine.

• Short design for increased stiffness
• Ground HSS for faster, precise drilling
• 135° tip angle for reduced walking in hard materials
• Fully ground shank for high runout accuracy
• Conforms to DIN 338 for consistent quality

Greater Precision through a Short, Stable Design

A shorter geometry reduces the exposed length and therefore the tendency to bend, delivering noticeably better stability during machining. The short configuration of this twist drill makes it especially effective for precise work in metal, where less vibration and improved concentricity yield cleaner holes. Users benefit from improved control when working on tight setups or thin workpieces, since the reduced cantilever minimizes deflection and tool chatter.

Faster Cutting with Ground HSS for Hard Materials

The HSS‑G ground geometry enables higher cutting performance: up to 40% faster penetration and lower required feed force compared with conventional HSS designs, according to manufacturer data. This feature is particularly advantageous when drilling alloyed and unalloyed steel, cast iron, sintered materials and hard plastics. The ground flute geometry also produces sharper cutting edges and consistent chip evacuation, which supports longer tool life under appropriate cooling.

Optimised Tip Geometry for Accurate Starts

A 135° tip angle is recommended for harder workpiece materials because it shortens the initial cutting time and reduces the risk of punch‑through and tip wandering. The Type N normal spiral is a classic metal drill geometry, providing reliable centring and consistent chip removal for a wide range of metallic applications. For users unfamiliar with tip angles: a larger angle means a flatter point that spreads cutting action over a wider area, which reduces pressure per unit area at the entry.

Compatibility, Standards and Practical Use

Manufactured to DIN 338, this short twist drill matches established dimensions and tolerances for short cylindrical shank drills, easing integration into workshop inventories. The fully ground shank improves run‑out accuracy in chucks and sleeves, which is critical for high‑precision drilling operations. Although mainly intended for stationary or hand Drilling Machines, the design supports use in many standard metalworking environments when appropriate clamping and cooling are applied.

Who Benefits and How to Apply It

Professional machinists and skilled hobbyists who need accurate holes in hard or alloyed metals will appreciate the combination of stiffness and sharp cutting geometry. When drilling, ensure adequate coolant or lubrication for tough materials and moderate spindle speeds to keep temperatures down; reducing thermal load preserves edge life on the HSS‑G material. For tasks that require extreme impact or interrupted cuts, consider machine setup and feed rates to avoid brittle fracture of the ground tool.

We recommend the MetavCUT Twist Drill for precision metalworking applications — for personalised technical advice or to confirm suitability for your task contact METAV Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 or WhatsApp +49 170 2837271

• Designation: Twist Drill
• Brand: MetavCUT
• SKU: 45077-FDA
• Diameter: 7.7 mm
• Spiral Length: 75 mm
• Total Length: 117 mm
• Tip Angle: 135°
• Type: Type N
• Execution: Short
• Shaft Finish: Fully ground
• Colour: Bright finished
• Material: HSS‑G
• Norm: DIN 338
• Application: Drills for metal
• For Drilling Machine: Drilling Machine
• Model Series: Standard Line
• Manufacturer: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; info@metav-werkzeuge.com

FAQ

What is the Twist Drill used for?
The MetavCUT Twist Drill (Type N) is primarily used for machining high‑strength materials and larger drill diameters; its short execution and ground geometry make it suitable for precise metalworking tasks where stability and accurate holes are required. The shape allows easier resharpening and reliable performance under appropriate cooling.

Which three drill types exist?
Generally, drills are grouped as metal drills, wood drills and stone/concrete drills; the MetavCUT Twist Drill belongs to the metal drill category and is optimised for metals rather than masonry or softwood applications.

Can the Twist Drill be used in wood?
The MetavCUT Twist Drill can be used in wood, but as a metal drill it offers less guidance and a rougher finish compared with dedicated wood drills; it is easier to resharpen and exhibits lower self‑feeding, so results may be acceptable for rougher wood work but not for fine woodworking finishes.