Bosch HSS-Co Metal Drill Bits 5.5mm DIN 338 - Pack of 10

Summary

The Bosch HSS-Co 5.5mm Metal Drill Bit (2608585888) is a cobalt-alloyed high-speed steel twist drill designed for demanding metal drilling applications. Supplied in a pack of ten, it is the go-to choice for trade professionals working with hard and tough steels, including stainless steel and acid-resistant alloys. The DIN 338 ground profile and split-point tip combine speed with accuracy, significantly reducing downtime between holes.

Features

• Manufactured from high-speed steel alloyed with 5% cobalt, delivering outstanding heat and wear resistance for extended service life.
• Fully ground HSS construction ensures a superior surface finish and tight diameter tolerance (h8) for precise, repeatable results.
• 135deg self-centring split-point tip provides active cutting action and perfect centring without the need for a centre punch or pilot hole up to 10mm.
• Delivers up to 40% faster drilling rates and 50% lower feed pressure compared to standard HSS bits.
• Two cutting edges and twin flutes promote rapid chip evacuation, reducing heat build-up and prolonging bit life.
• Suitable for alloyed and unalloyed steel, stainless steel (V2A/V4A), cast iron, cast steel, and acid- and heat-resistant steels.
• Cylindrical shank is compatible with standard three-jaw drill chucks; ideal for use with pillar drills and drill stands.
• Produced to DIN 338, Type N (standard helix angle), ensuring consistent industry-standard geometry.

Specifications

• SKU: 2608585888
• Diameter: 5.5mm
• Working Length: 57mm
• Overall Length: 93mm
• Material: HSS with 5% cobalt (HSS-Co)
• Standard: DIN 338
• Tip Angle: 135deg
• Diameter Tolerance: h8
• Shank Type: Cylindrical
• Pack Quantity: 10

What's Included

• 10 x Bosch HSS-Co 5.5mm Metal Drill Bits (2608585888)