Twist Drill (Spiralbohrer) — HSS‑G Short, Ø 7.8 mm, 135°, Type N, Bright Finished

The Twist Drill (Short Type N) is a precision HSS‑G metal drill designed for accurate machining with a 7.8 mm diameter and a 135° point angle, ideal for demanding metalworking tasks.

• Short HSS‑G design for higher stability
• 135° Point angle for hard materials
• Fully ground shank for precise runout
• Conforms to DIN 338 for consistent geometry
• Suited for alloyed and unalloyed steel

Increased Productivity through Short Design and High Cutting Speed

Designed for metalworking professionals, this short spiral cutter delivers higher stability and reduced deflection thanks to its shorter overhang. The HSS‑G grinding process produces very sharp cutting edges that allow up to 40% faster drilling with roughly 50% lower feed force compared to conventional HSS variants. This results in faster cycle times on production machines and more consistent hole quality during serial operations.

Durable Material and Clear Cutting Advantages

Thanks to its HSS‑G construction and CNC grinding of the flutes, the tool provides exceptional edge sharpness and running accuracy. HSS‑G (Ground High Speed Steel) combines wear resistance with the possibility of regrinding; this means less downtime for replacement and the option for refurbishment in maintenance routines. For users unfamiliar with the term, HSS‑G simply refers to a High Speed Steel drill that has been ground for superior geometry and finish, making it especially suited for hard and abrasive metals.

Practical Application: Where the Short Twist Drill Excels

For operations in steel, cast steel, cast iron, sintered iron, non‑ferrous metals and hard plastics, the short twist drill is particularly beneficial. The Type N spiral (normal helix) offers a classic geometry tailored to metal drilling, ensuring reliable chip evacuation and stable penetration. This makes the bit a strong choice for stationary and portable drilling machines when precision holes in tougher materials are required.

Optimised Geometry, Standards and Handling Recommendations

The 135° point angle reduces initial cutting pressure and improves centring in hard materials such as stainless steel. Conformity to DIN 338 guarantees standardised lengths and shank tolerances, simplifying toolholder selection and repeatability. Because ground drills can be somewhat more brittle than roll‑formed types, coolant use and appropriate cutting speeds are recommended for prolonged life. A fully ground shank ensures minimal runout, which is essential for tight‑tolerance holes.

Choose the MetavCUT Profi Line short Twist Drill for precision metalworking — for questions about suitability or further technical data, METAV Werkzeuge provides expert consultation: info@metav-werkzeuge.com · +49 2822 7131930 · WhatsApp +49 170 2837271

• Bezeichnung: Twist Drill (Spiralbohrer)
• Marke: MetavCUT
• SKU: 48078-FDA
• Durchmesser: 7.8 mm
• Gesamtlänge: 117 mm
• Spirallänge: 75 mm
• Spitzenwinkel: 135°
• Typ: Type N
• Ausführung: short
• Schaftausführung: fully ground
• Farbe/Oberfläche: bright finished
• Material: HSS-G
• Norm: DIN 338
• Modellserie: Profi Line
• Anwendung: Drills for metal
• Für Bohrmaschine: Drilling Machine
• Hersteller: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; info@metav-werkzeuge.com

FAQ

For what is the Twist Drill used?
The MetavCUT Twist Drill (Short Type N) is primarily used for machining high‑strength materials and larger drill diameters; its short design and HSS‑G grinding make it suitable for precise metal drilling where stability and clean hole quality are required.

Which 3 drill types exist?
Common categories are Metal Drill, Wood Drill and Stone/Concrete Drill; the MetavCUT Twist Drill belongs to the Metal Drill group and is optimised for ferrous and non‑ferrous metals.

Why are Twist Drills pointed?
A pointed tip reduces the chisel edge at the centre, lowering friction and required feed forces; the 135° point of the MetavCUT Twist Drill improves centring and reduces entry forces in harder materials.

Can a metal Twist Drill be used in wood?
A metal‑type drill such as the MetavCUT Twist Drill can be used in wood, but guidance and finish are typically worse than with a dedicated Wood Drill; however, metal drills are easier to regrind and show lower self‑feeding characteristics.