Twist drill bit kwb COBALT HSS CO 1 piece right hand rotation

kwb COBALT HSS CO twist drill bit, right hand rotation, made from 5% cobalt-alloyed high-speed steel, precision ground and finished in a bronze colour. The drill has a 135° tip angle and is cross-ground to DIN 1412 C for self‑centering cylindrical performance, supplied as a single piece in blister packaging for professional and industrial use.

Advantages

The cobalt-alloyed HSS construction provides increased heat resistance and longer life when drilling hard and abrasive materials. Precision grinding and cross-ground geometry ensure accurate centring and smooth cutting. The 135° tip angle reduces walking on the surface and improves performance in stainless and alloyed steels while the bronze finish offers corrosion resistance and easy identification.

Suitable for

• Drilling in steel and alloyed steel
• Stainless steel grades A2 and A4
• Cast iron and cast steel
• Bronze and non-ferrous metals
• Plastics and other difficult-to-machine materials

Key specifications

• Brand: KWB
• Model / MPN: 248700
• EAN: 4009312487000
• Material: HSS with 5% cobalt (HSS-Co)
• Tip angle: 135°
• Flute / shank: cylindrical, right-hand rotation
• Finish: bronze colour
• Standard: cross-ground to DIN 1412 C
• Package: 1 piece, blister

How to use

Secure the drill bit in the tool’s chuck ensuring a firm, concentric fit. Use appropriate cutting speed and feed for the material being drilled and apply cutting fluid when working with stainless or alloyed steels to reduce heat and extend tool life. Start drilling at low speed to establish the centre, then increase speed as appropriate for the diameter and material. Clear chips frequently to avoid clogging and overheating.

Usage recommendations

For best results with A2/A4 stainless steels and other hard materials, use slower cutting speeds, steady feed, and suitable coolant; replace the bit when wear affects centring or cutting performance.