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. 812-6030
FabrikantnummerG57016.5
FabrikantDormer
70,46 €
Each
Aantal stuks
Countersink 16.5mm 90° 3 HSS 60 mm 1 10 mm -
RS-stocknr. 508-9042
Fabrikantnummer05641
FabrikantEXACT
8,06 €
Each
Aantal stuks
Countersink 6.3mm 90° 3 HSS 31 mm 1 1/4 in -
RS-stocknr. 218-595
FabrikantRS PRO
14,58 €
Each
Aantal stuks
Countersink 12mm 90° 5 HSS - 1 - -
RS-stocknr. 218-652
FabrikantRS PRO
7,90 €
Each
Aantal stuks
Countersink 12mm 90° 3 HSS - 1 - -
RS-stocknr. 508-8932
Fabrikantnummer05642
FabrikantEXACT
8,06 €
Each
Aantal stuks
Countersink 8.3mm 90° 3 HSS 31 mm 1 1/4 in -
RS-stocknr. 215-495
FabrikantRS PRO
27,34 €
Each
Aantal stuks
Countersink 15mm 90° - HSS 65 mm 1 10 mm 37.5mm
RS-stocknr. 136-3944
FabrikantnummerG10716.5
FabrikantDormer
81,13 €
Each
Aantal stuks
Countersink 16.5mm 90° 3 HSS-E 50 mm 1 6.35 mm -
RS-stocknr. 136-3948
FabrikantnummerG10610.4
FabrikantDormer
34,55 €
Each
Aantal stuks
Countersink 10.4mm 90° 3 HSS 50 mm 1 6 mm -
RS-stocknr. 136-3950
FabrikantnummerG10616.5
FabrikantDormer
48,93 €
Each
Aantal stuks
Countersink 16.5mm 90° 3 HSS 60 mm 1 10 mm -
RS-stocknr. 509-0036
Fabrikantnummer05510
FabrikantEXACT
6,33 €
Each
Aantal stuks
Countersink 8.3mm 90° 3 HSS 50 mm 1 6 mm -
RS-stocknr. 423-876
FabrikantRS PRO
5,58 €
Each
Aantal stuks
Countersink 6.3mm 90° 3 HSS 31 mm 1 7.15 mm 21.5mm
RS-stocknr. 215-445
FabrikantRS PRO
10,64 €
Each
Aantal stuks
Countersink 15mm 90° - HSS 65 mm 1 10 mm 37.5mm
RS-stocknr. 562-533
FabrikantRS PRO
9,51 €
Each
Aantal stuks
Countersink 10mm 90° 5 HSS 39 mm 1 6.35 mm 20.5mm
RS-stocknr. 666-7422
FabrikantnummerG13616.5
FabrikantDormer
30,24 €
Each
Aantal stuks
Countersink 16.5mm 90° 3 HSS 60 mm 1 10 mm -
RS-stocknr. 136-3940
FabrikantnummerG1078.3
FabrikantDormer
49,97 €
Each
Aantal stuks
Countersink 8.3mm 90° 3 HSS-E 50 mm 1 6.35 mm -
RS-stocknr. 508-9020
Fabrikantnummer05643
FabrikantEXACT
9,13 €
Each
Aantal stuks
Countersink 10.4mm 90° 3 HSS 34 mm 1 1/4 in -
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. 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. 194-7921
FabrikantnummerD-42204
FabrikantMakita
52,53 €
1 Set
Set(s)
Countersink Set 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm - - - - 6 - -
RS-stocknr. 666-7416
FabrikantnummerG13610.0
FabrikantDormer
22,58 €
Each
Aantal stuks
Countersink 10mm 90° 3 HSS 50 mm 1 6 mm -