BORDO IMPACT Hex Shank HSS Twist Drill Set

1/4″ hex shank facilitates fast tool loading in cordless impact drivers and quick change adaptors.
One piece solid core design is significantly more durable than the conventional two piece design that utilises a hex sleeve on a standard round drill bit.
135° split point delivers a precision start and prevents bit wander for fast, accurate holes.
Premium quality M2 HSS ensures extreme performance and long bit life.
Bordo Impact Bits are designed and manufactured for optimum performance in modern impact drivers.
Not only do they offer significantly increased bit life in impact applications but they also offer exceptional performance in standard driving usage.
The impact driver action places high peak torque demands on both insert and power bits.
Our range features a uniquely engineered torsion zone with multi-stage hardening and tempering to dissipate damaging peak loads.

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BORDO Green Band HSS-Co TiN Carbon Steel Drilling

Bordo Metric Green Band HSS-Co TiN Coated Twist Drills for Carbon Steel.
DIN338
130° split point with two helical flutes with 33 degrees of helix angle.
The machinability of different carbon steels is as varied as their properties. Soft-tough construction steels place a unique set of demands on the tools.
The Green Band Series of drills and taps have been developed specifically for this range of steels.
For machining materials with Hardness < 250 HB : Tensile Strength <900 N/mm2.

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ANSI B94-11
118° chisel point with 30° helix.
Chisel point is suitable for general purpose drilling.
Black Finish Twist Drills (also called blue finish) achieve their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating.
This surface helps to keep lubricant on the tool, particularly important on the cutting edges, thus reducing friction and cold welding. The result is increased tool life.
Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.

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Stub drills (screw machine twist drills) have a shorter overall length than Twist drills for maximum rigidity and longer tool life.
135° Split Point (crankshaft point).
Split point is self centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust.
They are designed primarily for machining operations in lathes (screw machines) but can also be used in manual hand held drills.
Bordo Stub Drills have two helical flutes with 30 degrees of helix angle. This provides fast chip ejection and very stable drilling operation.
Black Finish Stub Drills (also called blue finish) achieve their distinctive colour by steam tempering, a thermal process resulting in a porous tool coating.
Black finish tools are generally recommended for ferrous applications where the oxide layer aids chip flow and heat dissipation.

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