HSS multi diameter step drills produce good quality holes in a wide variety of sheet metal, using either a bench drill or light pedestal drilling machine. Manufactured from high speed steel, they offer sound rigidity, strength and stability when machining. Each tool cuts parallel holes in a range of specific sizes and is compatible with materials up to 1/8" (3mm) thick.

Features and Benefits
• High speed steel construction for greater strength, rigidity and stability
• Excellent wear and heat resistance for prolonged tool life
• Cuts parallel holes in sheet metal

Typical Applications
• Drilling
• Sheet metal

Notes
• Available sizes 1-12mm to 6-37mm

Series J100 - Metric general purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite.

Features and Benefits
• High speed steel construction with bright finish for increased toughness
• Supplied in the as-ground condition for use with non ferrous materials

Standards
• Manufactured to BS 328/DIN338RN

Notes
• Drills with a bright finish are supplied in the as-ground condition and such tools are used generally in the machining of non-ferrous materials.

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.

An industrial quality general purpose 25 piece jobber drill set suitable for a wide range of steels and supplied in indexing metal case. Manufactured from High Speed Steel (HSS) with a black oxidised finish.

Features and Benefits
• High Speed Steel (HSS) ground flute drills for general purpose use
• Black oxide blue finish coating for bolstered longevity
• Convenient 25 piece metric set ranging from 1 to 13.00mm x 0.5mm to cover board range of uses
• Supplied in an indexed metal case for ease of storage

Contents
• 1mm x 0.5mm (1)
• 1.5mm x 0.5mm (1)
• 2mm x 0.5mm (1)
• 2.5mm x 0.5mm (1)
• 3mm x 0.5mm (1)
• 3.5mm x 0.5mm (1)
• 4mm x 0.5mm (1)
• 4.5mm x 0.5mm (1)
• 5mm x 0.5mm (1)
• 5.5mm x 0.5mm (1)
• 6mm x 0.5mm (1)
• 6.5mm x 0.5mm (1)
• 7mm x 0.5mm (1)
• 7.5mm x 0.5mm (1)
• 8mm x 0.5mm (1)
• 8.5mm x 0.5mm (1)
• 9mm x 0.5mm (1)
• 9.5mm x 0.5mm (1)
• 10mm x 0.5mm (1)
• 10.5mm x 0.5mm (1)
• 11mm x 0.5mm (1)
• 11.5mm x 0.5mm (1)
• 12mm x 0.5mm (1)
• 12.5mm x 0.5mm (1)
• 13mm x 0.5mm (1)

Typical Applications
• Steels
• Cast steel
• Grey cast iron
• Malleable cast iron
• Nickel brass
• Aluminium alloy
• Graphite

Standards
• BS328:Part 1
• DIN 338N
• ANSI B94 -11M