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.


When would I need a Counterbore?


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 Number of Pieces Shank Diameter Overall Length Material
RS-stocknr. 132-019
FabrikantRS PRO
164,99 €
Each
Aantal stuks
Counterbore Set M3 to M10 - - - - - 12 - - HSS
RS-stocknr. 132-031
FabrikantRS PRO
49,67 €
Each
Aantal stuks
Counterbore M12 14mm - 20mm 22mm Plain 1 12.5 mm 100 mm HSS
RS-stocknr. 522-7452
FabrikantRS PRO
49,44 €
Each
Aantal stuks
Counterbore M8 8.4mm 9.5mm 15mm 19mm Screwed 1 10 mm 87.3 mm Steel
RS-stocknr. 131-858
FabrikantRS PRO
22,23 €
Each
Aantal stuks
Counterbore M8 9mm - 15mm 22mm Plain 1 12.5 mm 100 mm HSS
RS-stocknr. 522-7480
FabrikantRS PRO
72,75 €
Each
Aantal stuks
Counterbore M12 13mm 13.5mm 20mm 25.5mm Screwed 1 12 mm 108 mm HSS
RS-stocknr. 132-025
FabrikantRS PRO
95,72 €
Each
Aantal stuks
Counterbore Set M3 to M10 - - - - - 6 - - HSS
RS-stocknr. 131-870
FabrikantRS PRO
13,16 €
Each
Aantal stuks
Counterbore M6 6.6mm - 11mm 18mm Plain 1 8 mm 80 mm HSS
RS-stocknr. 522-7424
FabrikantRS PRO
27,96 €
Each
Aantal stuks
Counterbore M4 4.3mm 5.5mm 8mm 12.5mm Screwed 1 6 mm 65 mm HSS
RS-stocknr. 522-7474
FabrikantRS PRO
57,59 €
Each
Aantal stuks
Counterbore M10 10.5mm 11mm 18mm 19mm Screwed 1 10 mm 89 mm HSS
RS-stocknr. 131-842
FabrikantRS PRO
12,16 €
Each
Aantal stuks
Counterbore M5 5.5mm - 10mm 18mm Plain 1 8 mm 80 mm HSS
RS-stocknr. 522-7446
FabrikantRS PRO
35,48 €
Each
Aantal stuks
Counterbore M6 6.4mm 8mm 11mm 12.5mm Screwed 1 6 mm 76 mm HSS
RS-stocknr. 131-886
FabrikantRS PRO
12,56 €
Each
Aantal stuks
Counterbore M3 3.4mm - 6mm 14mm Plain 1 5 mm 71 mm HSS
RS-stocknr. 131-864
FabrikantRS PRO
11,12 €
Each
Aantal stuks
Counterbore M4 4.5mm - 8mm 14mm Plain 1 5 mm 71 mm HSS
RS-stocknr. 131-993
FabrikantRS PRO
24,02 €
Each
Aantal stuks
Counterbore M10 11mm - 18mm 22mm Plain 1 12.5 mm 100 mm HSS
RS-stocknr. 522-7430
FabrikantRS PRO
31,30 €
Each
Aantal stuks
Counterbore M5 5.3mm 6.5mm 10mm 12.5mm Screwed 1 6 mm 70 mm HSS
RS-stocknr. 508-9250
Fabrikantnummer05845
FabrikantEXACT
20,84 €
Each
Aantal stuks
Counterbore M8 9mm - 15mm - Plain 1 12.5 mm 100 mm HSS
RS-stocknr. 508-9266
Fabrikantnummer05844
FabrikantEXACT
11,95 €
Each
Aantal stuks
Counterbore M6 6.6mm - 11mm - Plain 1 8 mm 80 mm HSS
RS-stocknr. 508-9272
Fabrikantnummer05843
FabrikantEXACT
11,21 €
Each
Aantal stuks
Counterbore M5 5.5mm - 10mm - Plain 1 8 mm 80 mm HSS
RS-stocknr. 508-9238
Fabrikantnummer05863
FabrikantEXACT
94,09 €
1 Set
Set(s)
Counterbore Set M3 to M10 - - - - - 6 - - HSS
RS-stocknr. 508-9036
Fabrikantnummer05841
FabrikantEXACT
11,46 €
Each
Aantal stuks
Counterbore M3 3.4mm - 6mm - Plain 1 5 mm 71 mm HSS
Related Products
Counterbores for cutting holes where a capscrew or ...
Description:
Counterbores for cutting holes where a capscrew or fastener is required to sit flush or even below the level of the workpiece. Thread size is the size of the screw thread to sit within the hole and cutting diameter shows ...
Counterbores for cutting holes where a capscrew or ...
Description:
Counterbores for cutting holes where a capscrew or fastener is required to sit flush or even below the level of the workpiece. Thread size is the size of the screw thread to sit within the hole and cutting diameter shows ...