The HSS-Co 5% Countersink 6 Piece Set features high performance, multi flute countersinks in various sizes.

Features and Benefits
• Manufactured from high speed steel and cobalt for improved strength
• Straight shank design with bright finish for improved performance on ductile metals
• Supplied in a robust carry case for easy and secure portability
• straight shank design
• 90° ground flute angle provides optimal cutting performance with an inclusive angle of 90°

Standards
• Manufactured to BS328:Part 5:1983

Contents
• 1x 8, 10, 12.5, 16, 20 and 25mm

Typical Applications
Deburring
Chamfering

Cylindrical-End Cutting
All sizes are nominal with a 6mm shank unless other wise stated.

Cut Numbers:

Cut 3 - Rapid Cut.
for use on softer non ferrous and plastic materials, i.e aluminium, fibreglass, plastics, hard rubber and zinc alloy,

Cut 6 - Double Cut.
Crosscut and double cut to improve control and chipbreaks. Manufactured from high grade tungsten carbide for general-purpose use.

Cut 9 - Chipbreaker
Chipbreaker fast stock removal for improved control and reduced chips for use on hard materials, i.e. steel alloy 50RC, 60RC, carbon and cast iron.

Suitable for deburring and polishing of cast iron, cast steel, carbon steel, alloy steel and stainless steel etc.
up to HRC65 hardness.

Please note:
• Work piece and tools should always be steady and well supported.
• Carbide burrs are not suitable for 'milling' large amounts of material, they are for light stock removal and high revolutions 'LOW FEED - HIGH SPEED'.
• Always ensure that at least 70% of the shank length is clamped by the collet or chuck of the tool being used.
• Always ensure that the tool is rated to the recommended operating speed of the burr.

Cut 9 conical carbide burrs feature a cut-9 chipbreaker for fast stock removal, improved control and reduced chips. Ideally suited to hard materials such as steel alloy 50RC, 60RC, carbon and cast iron.

Features and Benefits
• Manufactured from a tough carbide substrate for greater tool hardness
• Cut-9 chipbreaker increases stock removal and chip control
• Ideal for use on hard materials such as steel alloys and more

Typical Applications
• Deburring
• Polishing
• Cast iron
• Cast steel
• Carbon steel
• Alloy steel
• Stainless steel
• Materials up to HRC65 hardness

Notes
• Workpiece and tools should always be steady and well supported
• Carbide burrs are not suitable for 'milling' large amounts of material, they are for light stock removal at high rpm's 'LOW FEED - HIGH SPEED'.
• Always ensure that at least 70% of the shank length is clamped by the collet or chuck of the tool being used.
• Always ensure that the tool is rated to the recommended operating speed of the burr.

Heavy duty construction manufactured from HSS and cobalt for increased hardness and durability with 6 flutes for improved cutting performance and chip control.

Features and Benefits
• HHS-Co construction for improved hardness
• 6 flutes for improved chip control and cutting efficiency

Typical Applications
• Countersinking

Standards
• Manufactured to BS 328:Part 5:1983