Additional information
| Set | 1/16-1/4" 13 Piece, 1/16-3/8" 21 Piece, 1/16-1/2" 29 Piece |
|---|
BORDO Black Finish HSS Jobber Drill Fractional Set
- Bordo Black Knight M2-HSS Twist Drills.
- ANSI B94-11
- 118° Split Point (crankshaft point)
- Split point is self centering and reduces the need for end thrust.
- Friction at workpiece is reduced.
- 118° point angles are ideal for use in materials such as mild steel and cast iron.
- The 118° point creates easily controlled chips which are wide and thin.
- 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.
Related products
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Colour BandBORDO 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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Bright Finish HSSBORDO Bright Finish HSS Jobber Drill Metric
- Bordo Metric Quick Silver M2-HSS Twist Drills.
- DIN338
- 118° Split Point (crankshaft point).
- Split point is self centering and reduces the need for end thrust. Friction at workpiece is reduced.
- 118° point angles are ideal for use in materials such as mild steel and cast iron.
- The 118° point creates easily controlled chips which are wide and thin.
- Bright Finish Twist Drills have no surface treatment and are supplied in the as-ground condition.
- These tools are suitable for general purpose use, particularly for non-ferrous applications.
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IMPACT Hex Shank HSS Twist DrillsBORDO IMPACT Hex Shank HSS Twist Drill
- 1/4″ Hex Shank Twist Drill for Impact Drivers.
- 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.
- Specifically engineered for use in impact drivers these bits are also fully compatible with conventional rotary drills.
- 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.
- 1/4″ hex shank facilitates fast tool loading in cordless impact drivers and quick change adaptors.
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Colour BandBORDO Blue Band Stub HSS-Co TiAlN Stainless Steel Drilling Metric
- Bordo Metric Blue Band HSS-Co TiAlN Coated Stub Drills for Stainless Steel.
- DIN1897
- Multi-faceted point with two helical flutes with 35 degrees of helix angle.
- The machining of stainless steels is difficult due to its work hardening properties, toughness and poor thermal conductivity, which places high demands on the cutting tools.
- They are designed primarily for machining operations in lathes (screw machines) but can also be used in manual hand held drills.
- The Blue Band – Stainless Steel – Series has been specifically designed to suit these difficult machining requirements.
- TiAlN coating increases tool surface hardness to 87Rc.
- For machining materials with Hardness < 350 HB : Tensile Strength <1250 N/mm2.
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