Counterbores

Counterbore, or counterbore cutters, are drill-bits used to make counterbore holes, which is a way of creating a flat-bottomed extension of an existing hole in a material. The counterbore cutter will essentially create a cylindrical cavity at the head of an already drilled hole. This allows the hole to accommodate flat bottomed screw or bolts so that they sit flush to the surface of the material, rather than protruding, while still able to perform their function to the fullest.



The reasons for desiring a counterbore of sunken screw are many. There are aesthetic reasons a manufacturer may want to hide the fixings, in furniture for example, but there are also aerodynamic reasons that are applicable to the aerospace industry.



Counterbores will often be made to be slightly larger than an accommodating bolt, to allow the use of socket wrenches or even screw caps.



Features of a Counterbore



  • Able to be used with conventional power tools

  • No protruding fixings

  • Increase the aesthetic appeal of the finished product

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Omschrijving Prijs Drill Bit Type Thread Size Pilot Diameter Pilot Length Cutter Diameter Cutter Length Shank Type Material Number of Pieces Shank Diameter Overall Length
RS-stocknr. 132-019
FabrikantRS PRO
€ 164,99
Each
Aantal stuks
Counterbore Set M3 to M10 - - - - - HSS 12 - -
RS-stocknr. 508-9272
Fabrikantnummer05843
FabrikantEXACT
€ 11,21
Each
Aantal stuks
Counterbore M5 5.5mm - 10mm - Plain HSS 1 8 mm 80 mm
RS-stocknr. 131-842
FabrikantRS PRO
€ 12,16
Each
Aantal stuks
Counterbore M5 5.5mm - 10mm 18mm Plain HSS 1 8 mm 80 mm
RS-stocknr. 508-9288
Fabrikantnummer05842
FabrikantEXACT
€ 10,14
Each
Aantal stuks
Counterbore M4 4.5mm - 8mm - Plain HSS 1 5 mm 71 mm
RS-stocknr. 522-7430
FabrikantRS PRO
€ 31,30
Each
Aantal stuks
Counterbore M5 5.3mm 6.5mm 10mm 12.5mm Screwed HSS 1 6 mm 70 mm
RS-stocknr. 508-9238
Fabrikantnummer05863
FabrikantEXACT
€ 94,09
1 Set
Set(s)
Counterbore Set M3 to M10 - - - - - HSS 6 - -
RS-stocknr. 131-864
FabrikantRS PRO
€ 11,12
Each
Aantal stuks
Counterbore M4 4.5mm - 8mm 14mm Plain HSS 1 5 mm 71 mm
RS-stocknr. 132-025
FabrikantRS PRO
€ 95,72
Each
Aantal stuks
Counterbore Set M3 to M10 - - - - - HSS 6 - -
RS-stocknr. 131-886
FabrikantRS PRO
€ 12,56
Each
Aantal stuks
Counterbore M3 3.4mm - 6mm 14mm Plain HSS 1 5 mm 71 mm
RS-stocknr. 508-9036
Fabrikantnummer05841
FabrikantEXACT
€ 11,46
Each
Aantal stuks
Counterbore M3 3.4mm - 6mm - Plain HSS 1 5 mm 71 mm
RS-stocknr. 131-858
FabrikantRS PRO
€ 22,23
Each
Aantal stuks
Counterbore M8 9mm - 15mm 22mm Plain HSS 1 12.5 mm 100 mm
RS-stocknr. 522-7446
FabrikantRS PRO
€ 35,48
Each
Aantal stuks
Counterbore M6 6.4mm 8mm 11mm 12.5mm Screwed HSS 1 6 mm 76 mm
RS-stocknr. 131-870
FabrikantRS PRO
€ 13,16
Each
Aantal stuks
Counterbore M6 6.6mm - 11mm 18mm Plain HSS 1 8 mm 80 mm
RS-stocknr. 131-993
FabrikantRS PRO
€ 24,02
Each
Aantal stuks
Counterbore M10 11mm - 18mm 22mm Plain HSS 1 12.5 mm 100 mm
RS-stocknr. 522-7424
FabrikantRS PRO
€ 27,96
Each
Aantal stuks
Counterbore M4 4.3mm 5.5mm 8mm 12.5mm Screwed HSS 1 6 mm 65 mm
RS-stocknr. 508-9244
Fabrikantnummer05846
FabrikantEXACT
€ 22,59
Each
Aantal stuks
Counterbore M10 11mm - 18mm - Plain HSS 1 12.5 mm 100 mm
RS-stocknr. 522-7452
FabrikantRS PRO
€ 49,44
Each
Aantal stuks
Counterbore M8 8.4mm 9.5mm 15mm 19mm Screwed Steel 1 10 mm 87.3 mm
RS-stocknr. 508-9266
Fabrikantnummer05844
FabrikantEXACT
€ 11,95
Each
Aantal stuks
Counterbore M6 6.6mm - 11mm - Plain HSS 1 8 mm 80 mm
RS-stocknr. 522-7480
FabrikantRS PRO
€ 72,75
Each
Aantal stuks
Counterbore M12 13mm 13.5mm 20mm 25.5mm Screwed HSS 1 12 mm 108 mm
RS-stocknr. 132-031
FabrikantRS PRO
€ 49,67
Each
Aantal stuks
Counterbore M12 14mm - 20mm 22mm Plain HSS 1 12.5 mm 100 mm