Countersinks

Countersink cutter drill bits are designed to fit directly into manual, electric and cordless drill driver attachments and have hexagonal or round shanks. Countersink cutters are used to create a chamfer around the rim of a pilot hole enabling the head of a countersunk screw to sit flush. Countersink cutters can also be used to remove the burr left from a drilling or tapping operation.


Types of Countersink Cutters



  • Cross-Hole Countersink Cutter: These have a hole that goes through the side of the cone that provides the cutting edge. These countersink cutters are suitable for deburring and can also be used in soft materials such as wood or plastic to create a countersunk hole. The design of these countersink cutters means that they are free from mechanical vibration or 'chatter' and they also stay in the centre.

  • Fluted Countersink cutter: These have fluted blades that produce a heavy chamfer to create the correct seating for a countersunk-head screw. Countersink cutters are available with six different cutting angles but the most common are 82° and 90°. The number of flutes on the countersink cutter can also vary.

  • Single fluted: These have less chatter or mechanical vibration than multi-fluted and are ideal for use in small holes for general-purpose countersinking, chamfering and deburring. These are designed for machine use and light portable work when operating at higher speeds.

  • Three fluted: These are designed for a chatter-free performance and are used mainly in portable applications at slower speeds. The design of these countersinks gives them a good centring ability.

  • Four fluted: These have good radial relief

  • Five Fluted: These have a rugged design and the odd number of flutes minimises chatter

  • Six fluted: These are ideal for producing fast shearing cuts


These countersink cutter drill bits are made from HSS (High-Speed Steel) which can withstand high temperatures without losing its hardness.


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Omschrijving Prijs Drill Bit Type Head Diameter Countersink Angle Number of Flutes Material Overall Length Number of Pieces Shank Diameter Shank Length
RS-stocknr. 218-567
FabrikantRS PRO
€ 53,51
Each
Aantal stuks
Countersink Set 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm 90° 3 HSS - 6 - -
RS-stocknr. 215-423
FabrikantRS PRO
€ 9,91
Each
Aantal stuks
Countersink 5mm 90° - HSS 45 mm 1 6 mm 32mm
RS-stocknr. 673-8697
FabrikantRS PRO
€ 53,48
1 Set
Set(s)
Countersink Set 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm 90° 3 HSS - 6 - -
RS-stocknr. 218-551
FabrikantRS PRO
€ 5,13
Each
Aantal stuks
Countersink 6mm 90° 3 HSS - 1 - -
RS-stocknr. 562-634
FabrikantRS PRO
€ 10,70
Each
Aantal stuks
Countersink 6mm 90° 5 HSS 45 mm 1 5 mm 35mm
RS-stocknr. 456-898
FabrikantRS PRO
€ 12,76
Each
Aantal stuks
Countersink 12mm - 3 HSS 120 mm 1 - -
RS-stocknr. 218-618
FabrikantRS PRO
€ 62,93
Each
Aantal stuks
Countersink Set 6 mm, 8 mm, 10 mm, 12 mm, 16 mm, 20 mm 90° 5 HSS - 6 - -
RS-stocknr. 215-439
FabrikantRS PRO
€ 11,50
Each
Aantal stuks
Countersink 10mm 90° - HSS 48 mm 1 8 mm 30.5mm
RS-stocknr. 218-573
FabrikantRS PRO
€ 24,03
Each
Aantal stuks
Countersink 20mm 90° 5 HSS - 1 - -
RS-stocknr. 215-489
FabrikantRS PRO
€ 11,75
Each
Aantal stuks
Countersink 10mm 90° - HSS 48 mm 1 8 mm 30.5mm
RS-stocknr. 215-467
FabrikantRS PRO
€ 44,65
Each
Aantal stuks
Countersink Set 2 mm, 5 mm, 10 mm, 15 mm, 20 mm 90° - HSS - 4 - -
RS-stocknr. 673-8691
FabrikantRS PRO
€ 5,04
Each
Aantal stuks
Countersink 6.3mm 90° 3 HSS 45 mm 1 5 mm 35mm
RS-stocknr. 215-518
FabrikantRS PRO
€ 61,31
Each
Aantal stuks
Countersink Set 2 mm, 5 mm, 10 mm, 15 mm, 20 mm 90° - HSS - 4 - -
RS-stocknr. 673-8704
FabrikantRS PRO
€ 7,07
Each
Aantal stuks
Countersink 10.4mm 90° 3 HSS 50 mm 1 6 mm 36mm
RS-stocknr. 215-445
FabrikantRS PRO
€ 10,64
Each
Aantal stuks
Countersink 15mm 90° - HSS 65 mm 1 10 mm 37.5mm
RS-stocknr. 218-602
FabrikantRS PRO
€ 10,13
Each
Aantal stuks
Countersink 8mm 90° 5 HSS - 1 - -
RS-stocknr. 423-850
FabrikantRS PRO
€ 32,44
Each
Aantal stuks
Countersink 21mm 90° - HSS 65 mm 1 7.15 mm 20mm
RS-stocknr. 215-473
FabrikantRS PRO
€ 12,24
Each
Aantal stuks
Countersink 5mm 90° - HSS 45 mm 1 6 mm 45mm
RS-stocknr. 423-816
FabrikantRS PRO
€ 8,99
Each
Aantal stuks
Countersink 12.4mm 90° 3 HSS 36 mm 1 7.15 mm 21.5mm
RS-stocknr. 423-826
FabrikantRS PRO
€ 13,29
Each
Aantal stuks
Countersink 16.5mm 90° 3 HSS 40 mm 1 7.15 mm 21.5mm
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