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. 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. 673-8701
FabrikantRS PRO
6,34 €
Each
Aantal stuks
Countersink 8.3mm 90° 3 HSS 50 mm 1 6 mm 38mm
RS-stocknr. 218-624
FabrikantRS PRO
20,64 €
Each
Aantal stuks
Countersink 25mm 90° 3 HSS - 1 - -
RS-stocknr. 509-0008
Fabrikantnummer05522
FabrikantEXACT
18,26 €
Each
Aantal stuks
Countersink 25mm 90° 3 HSS 67 mm 1 10 mm -
RS-stocknr. 136-3939
FabrikantnummerG1076.3
FabrikantDormer
47,60 €
Each
Aantal stuks
Countersink 6.3mm 90° 3 HSS-E 50 mm 1 6.35 mm -
RS-stocknr. 499-390
Fabrikantnummer4405710
FabrikantEXACT
10,38 €
Each
Aantal stuks
Countersink 8.3mm 90° 3 HSS-E 50 mm 1 6 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. 499-368
Fabrikantnummer4405722
FabrikantEXACT
30,66 €
Each
Aantal stuks
Countersink 25mm 90° 3 HSS-E 67 mm 1 10 mm -
RS-stocknr. 499-396
Fabrikantnummer4405713
FabrikantEXACT
12,64 €
Each
Aantal stuks
Countersink 10.4mm 90° 3 HSS-E 50 mm 1 6 mm -
RS-stocknr. 423-810
FabrikantRS PRO
7,69 €
Each
Aantal stuks
Countersink 10.4mm 90° 3 HSS 34 mm 1 7.15 mm 21.5mm
RS-stocknr. 218-602
FabrikantRS PRO
10,13 €
Each
Aantal stuks
Countersink 8mm 90° 5 HSS - 1 - -
RS-stocknr. 508-9799
Fabrikantnummer05515
FabrikantEXACT
8,30 €
Each
Aantal stuks
Countersink 12.4mm 90° 3 HSS 56 mm 1 8 mm -
RS-stocknr. 423-848
FabrikantRS PRO
20,50 €
Each
Aantal stuks
Countersink 14mm 90° - HSS 48 mm 1 7.15 mm 20mm
RS-stocknr. 136-3941
FabrikantnummerG10710.4
FabrikantDormer
58,81 €
Each
Aantal stuks
Countersink 10.4mm 90° 3 HSS-E 50 mm 1 6.35 mm -
RS-stocknr. 812-6012
FabrikantnummerG2363
FabrikantDormer
195,93 €
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. 136-3950
FabrikantnummerG10616.5
FabrikantDormer
48,93 €
Each
Aantal stuks
Countersink 16.5mm 90° 3 HSS 60 mm 1 10 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. 218-668
FabrikantRS PRO
14,90 €
Each
Aantal stuks
Countersink 10mm 90° 3 HSS - 1 - -
RS-stocknr. 218-589
FabrikantRS PRO
17,22 €
Each
Aantal stuks
Countersink 16mm 90° 5 HSS - 1 - -
RS-stocknr. 508-9008
Fabrikantnummer05645
FabrikantEXACT
11,22 €
Each
Aantal stuks
Countersink 16.5mm 90° 3 HSS 40 mm 1 1/4 in -