Metal Drill Bits

The Irwin Metric HSS Cobalt Drill Bits are perfect for drilling stainless steel and other high alloys. Their 135 split point grinding ensures perfect centring and reduced drilling pressure. An industrial quality ground flute ensures high accuracy drilling and fast removal of chips.

The drill bit body is manufactured from high quality HSS steel containing 5% Cobalt (Co). The added 5% Cobalt improves the red hardness (heat resistance) of the drill bit and results in significantly extended life. It has an attractive golden tempered surface finish.

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The Dormer A002 Metric HSS-TiN Coated Jobber Drill Bits in Pouch Packs. Each bit has a pointed web and fluted tip design. The point design allows for efficient cutting, with a reduced axial force and allows for accurate centring. The web design provides optimised strength, rigidity and improves the feed of the drilling bit. The flutes allows for efficient chip form and evacuation.

The bits have visible, tool in-situ marking that allows for easy identification. The optimised helix angle provides greater stiffness across the diameter range. The bright body improves cutting performance on ductile materials, and the Titanium Nitride coating resists flank and crater wear, and has low friction that allows for increased cutting speeds.

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Each Dormer A002 HSS-TiN Coated Jobber Drill in pouch pack has a pointed web and fluted tip design. The point design allows for efficient cutting, with a reduced axial force and allows for accurate centring. The web design provides optimised strength, rigidity and improves the feed of the drilling bit. The flutes allows for efficient chip form and evacuation.

The bits have visible, tool in-situ marking that allows for easy identification. The optimised helix angle provides greater stiffness across the diameter range. The bright body improves cutting performance on ductile materials, and the Titanium Nitride coating resists flank and crater wear, and has low friction that allows for increased cutting speeds.

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The Irwin Step Drill Bits are designed for precise drilling in thin materials and have a single flute for maximum drilling control into sheet metal. Their unique flute design ensures perfect round holes in sheet metal. A fluted shank also prevents the drill bit from slipping in the chuck, along with a self centring point that will not walk and eliminates centre punching.

Made from industrial grade M7 high-speed steel.

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The Milwaukee Metric HSS-G THUNDERWEB Metal Drill Bit design is unique, with a conical shaped web which gets thicker towards the back of the drill bit. It has a parabolic web cross section that gives a larger web thickness increasing the strength of the bit, and prevents breakage.

The THUNDERWEB flute form ejects hot chips rapidly, dissipating heat better, increasing the life span and working time. The open flute form also reduces drill drawback, especially when drilling deeper holes.

The 135 split point allows for precision starting, quick penetration, and requires less effort and feed pressure, and is perfect for drilling very hard materials. They are also great for drilling on curved surfaces.

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Dormer A100 Metric HSS jobber drills are suitable for use in the majority of general purpose engineering applications.

They have good self-centring capability on a wide range of materials and are suitable for both hand and machine use.

DIN338RN
BS328
ISO235

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Dormer A100 series general purpose HSS jobber drills are suitable for use in the majority of general purpose engineering applications.

They have good self-centring capability on a wide range of materials and are suitable for both hand and machine use.

DIN338RN
BS328
ISO235

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The Dormer A101 Metric Traditional Flute Ground Jobber Drill Bits are ideal for general machining applications. This HSS drill bit has a left hand spiral and a blue finish (bright below 3mm).

Manufactured to DIN 338 LN / BS328 / ISO 235.

Specification

Flute Geometry: Standard Helix, Left hand spiral.
Point Angle: 118.
Material: High Speed Steel.

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The Dormer A120 Metric HSS Stub Drill Bits for general machining applications and is ideal for use in portable drills, turrets and automatic lathes.

Special split-point ensures easy starting and accurate drill location.

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The Dormer A120 Imperial HSS Stub Drill Bits for general machining applications and is ideal for use in portable drills, turrets and automatic lathes.

Special split-point ensures easy starting and accurate drill location.

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