Twist Drill — Extra long HSS‑G Drill Bit for Metal (4 mm, 135°)

The Twist Drill is an extra‑long HSS‑G drill bit designed for deep metal drilling with a 4 mm diameter and a 135° tip angle, suitable for use in drilling machines and stationary equipment.

• Extra‑long HSS‑G design for deep drilling
• 4 mm diameter with 135° tip for hard metals
• Fully ground shank for high concentricity
• DIN 1869 standard for deep hole performance
• Bright finish for improved chip evacuation

Superior Material for Demanding Metalwork

The Twist Drill is manufactured from HSS‑G, providing high red hardness and wear resistance for demanding tasks. The combination of the DIN 1869 geometry and a 135° tip angle makes this bit particularly effective in harder materials, reducing chatter and improving centring when entering tough surfaces. The construction gives reliable hole quality and consistent performance in legated and unlegated steels, cast iron and non‑ferrous metals.

Made for Deep, Hard‑to‑Reach Holes

With a Total Length of 280 mm and a Spiral Length of 190 mm, this extra‑long design enables drilling far beyond standard reach, ideal for deep bore requirements or operations where access is restricted. The extended working length minimises the need for extensions and permits cleaner chip removal over long depths. For deep metal bores, the geometry supports sustained performance while maintaining hole straightness.

Precision Finish and Easier Cutting

A fully ground shank and CNC‑ground flutes ensure sharp cutting edges and superior runout, delivering precise holes and smooth chip flow. The bright finish reduces friction and aids chip evacuation during drilling. Compared with rolled HSS variants, the ground geometry allows up to 40% faster drilling and demands 50% less feed force, which translates to less operator effort and more efficient cycles on stationary or machine drills.

Recommended Applications and Safe Use

This Twist Drill is optimised for drilling in metal, including alloyed steels, cast steels and hard plastics. Due to the ground geometry, the bit is best used in machine or drill press environments with appropriate cooling; ground HSS can be more brittle than rolled designs and benefits from coolant and moderate feed rates to avoid breakage. For non‑industrial handheld use, verify machine stability and apply reduced feed to protect the tool.

Who Benefits Most

Workshops and professionals who need accurate deep holes in tougher materials will appreciate the combination of extra reach and precision. The bit suits machine shops, toolrooms and maintenance departments that require reproducible hole quality and longer working lengths without sacrificing centring performance. MetavCUT’s Standard Line targets users who prioritise precision and consistent results.

We recommend the MetavCUT extra‑long Twist Drill for precision deep metal drilling — for competent advice and tailored technical support contact METAV Werkzeuge at info@metav-werkzeuge.com, phone +49 2822 7131930 or WhatsApp +49 170 2837271

• Designation: Twist Drill (Spiralbohrer)
• Brand: MetavCUT
• SKU: 34040-FDA
• Diameter: 4 mm
• Tip Angle: 135°
• Material: HSS‑G
• Standard: DIN 1869
• Execution: extra long
• Total Length: 280 mm
• Spiral Length: 190 mm
• Shank Finish: fully ground (geschliffen)
• Colour/Finish: bright finished (blank)
• For Use With: Drilling Machine (Handbohrmaschine)
• Application: Drills for metal (Bohrer für Metall)
• Model Series: Standard Line
• Packaging Unit: 10
• Hersteller: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; info@metav-werkzeuge.com

FAQ

What materials is the Twist Drill by MetavCUT best suited for?
The MetavCUT Twist Drill is primarily designed for metalworking and performs well in alloyed and unalloyed steels, cast steel, cast iron and non‑ferrous metals; its HSS‑G composition and 135° tip help when machining harder materials and improve centring and hole quality.

How does the extra‑long execution improve drilling performance?
An extra‑long Twist Drill provides a greater overall and working length, allowing deeper bores without extensions; this is beneficial for long‑reach operations and restricted access, while the spiral geometry supports consistent chip evacuation over the full drilling depth.

For what is a Twist Drill used?
A Twist Drill is mainly applied to the machining of high‑strength materials and larger drill diameters; its shape is easy to re‑grind and it withstands significant loads while providing good centring and cutting behaviour.

Which three drill types are there?
Common categories include metal drills, wood drills and masonry/concrete drills.

Why are Twist Drills sharpened (ausgespitzt)?
Sharpening reduces the cross‑edge at the tip of the Twist Drill, which lowers friction and thus requires less feed force; at the same time the tip centres better in the workpiece and improves drilling accuracy.

Can a metal Twist Drill be used for wood?
A metal drill can be used in wood, but guidance and surface finish will usually be inferior compared with dedicated wood drills; metal drills are easier to re‑grind and typically have less self‑feed than specialised wood drills.

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

Is HSS or HSSE better?
The general belief that HSSE steels are categorically superior to HSS is incorrect; when choosing, evaluate whether your working conditions justify the higher cost of HSSE for your specific application.