Additional information
| Size | 5/8-1" 4 Pce 1/2", 9/16-1" 8 Pce 1/2" |
|---|
BORDO Reduced Shank HSS 1/2″ Shank Fractional Set
- Reduced shank HSS twist drill set.
- 118° notched point with 30° helix.
- Notched point is a variation on the standard chisel point, providing faster starting and reduced drill wander.
- 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.
- Bordo reduced shank HSS drills are ground and then a black finish is achieved by steam tempering, a thermal process resulting in a porous tool coating.
- This surface aids chip flow and heat dissipation.
- The drill is then ground a second time to achieve a bright finish on the shank and cutting edges.
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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Extra Deep Hole HSS-Co5BORDO Extra Deep Hole HSS-Co5 Metric Series 2
- HSS-Co5 (Cobalt) Extra Deep Hole Drills
- DIN1869
- HSS-Co5 (Cobalt), 130° UX Point, 40° Helix Parabolic.
- Cobalt HSS drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
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SpecialistBORDO Stub Drills Black HSS Fractional
- 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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Extra Deep Hole HSS-Co5
BORDO Extra Deep Hole HSS-Co5 Metric Series 3
- HSS-Co5 (Cobalt) Extra Deep Hole Drills
- DIN1869
- HSS-Co5 (Cobalt), 130° UX Point, 40° Helix Parabolic.
- Cobalt HSS drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
(0 reviews)Add to Quote This product has multiple variants. The options may be chosen on the product page