Broca helicoidal KWB 209705, HSS, giro a la derecha, 1 pieza

KWB 209705 is a single HSS twist drill bit designed for right-hand rotation and supplied as one piece for general metalworking and maintenance tasks. Manufactured to DIN 338 with type N geometry and a 118° tip angle, this spiral drill is roll-forged and steam-hardened, finished in a blue-black colour. It is suitable for drilling alloyed and mild steels, castings, non-ferrous metals and hard plastics when used in standard chucks and conventional drilling equipment.

Advantages

The KWB 209705 drill bit combines high-speed steel cutting performance with a roll-forged body that provides toughness and wear resistance. Steam hardening improves surface hardness while retaining core strength, which helps maintain cutting edge life during repetitive drilling. The DIN 338, type N geometry and 118° point angle deliver a balance between chip formation and centring for a wide range of materials. The blue-black finish offers corrosion protection and a consistent appearance for workshop storage.

Suitable for

Key specifications

How to use

Secure the KWB 209705 drill bit in a compatible standard chuck and ensure it is clamped concentrically to prevent runout. Select an appropriate rotational speed and feed rate for the material being drilled—slower speeds for harder or thicker metal, higher speeds for non-ferrous metals and plastics—and use cutting fluid when machining steels and castings to reduce heat and extend tool life. Apply steady, even feed pressure and clear chips regularly to maintain hole quality and prevent overheating of the bit.

Recommendations

For best results when drilling steels and castings, use a suitable cutting lubricant and moderate speeds to prolong the life of this HSS drill. When working with non-ferrous metals or plastics, increase spindle speed and use light feed to avoid clogging and melting. Inspect the cutting edge before use and replace the bit when wear or chipping affects hole accuracy.