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 and Benefits:Able to be used with conventional power toolsNo protruding fixingsIncrease aesthetic appeal of finished product

...
Read more Read less

Filters

Viewing 1 - 19 of 19 products
Results per page
Description Price Thread Size Pilot Diameter Pilot Length Cutter Diameter Cutter Length Shank Type Shank Diameter Overall Length Material
RS Stock No. 131-864
BrandRS PRO
MYR82.85
Each
units
M4 4.5mm - 8mm 14mm Plain 5 mm 71 mm HSS
RS Stock No. 522-7446
BrandRS PRO
MYR129.35
Each
units
M6 6.4mm 8mm 11mm 12.5mm Screwed 6 mm 76 mm HSS
RS Stock No. 131-842
BrandRS PRO
MYR88.12
Each
units
M5 5.5mm - 10mm 18mm Plain 8 mm 80 mm HSS
RS Stock No. 131-870
BrandRS PRO
MYR110.19
Each
units
M6 6.6mm - 11mm 18mm Plain 8 mm 80 mm HSS
RS Stock No. 132-031
BrandRS PRO
MYR222.53
Each
units
M12 14mm - 20mm 22mm Plain 12.5 mm 100 mm HSS
RS Stock No. 522-7480
BrandRS PRO
MYR274.71
Each
units
M12 13mm 13.5mm 20mm 25.5mm Screwed 12 mm 108 mm HSS
RS Stock No. 131-993
BrandRS PRO
MYR175.53
Each
units
M10 11mm - 18mm 22mm Plain 12.5 mm 100 mm HSS
RS Stock No. 522-7452
BrandRS PRO
MYR192.19
Each
units
M8 8.4mm 9.5mm 15mm 19mm Screwed 10 mm 87.3 mm Steel
RS Stock No. 131-858
BrandRS PRO
MYR141.67
Each
units
M8 9mm - 15mm 22mm Plain 12.5 mm 100 mm HSS
RS Stock No. 131-886
BrandRS PRO
MYR81.69
Each
units
M3 3.4mm - 6mm 14mm Plain 5 mm 71 mm HSS
RS Stock No. 522-7430
BrandRS PRO
MYR123.17
Each
units
M5 5.3mm 6.5mm 10mm 12.5mm Screwed 6 mm 70 mm HSS
RS Stock No. 522-7474
BrandRS PRO
MYR211.94
Each
units
M10 10.5mm 11mm 18mm 19mm Screwed 10 mm 89 mm HSS
RS Stock No. 522-7424
BrandRS PRO
MYR117.69
Each
units
M4 4.3mm 5.5mm 8mm 12.5mm Screwed 6 mm 65 mm HSS
RS Stock No. 508-9272
Mfr. Part No.05843
BrandEXACT
MYR55.39
Each
units
M5 5.5mm - 10mm - Plain 8 mm 80 mm HSS
RS Stock No. 508-9036
Mfr. Part No.05841
BrandEXACT
MYR69.23
Each
units
M3 3.4mm - 6mm - Plain 5 mm 71 mm HSS
RS Stock No. 508-9266
Mfr. Part No.05844
BrandEXACT
MYR63.22
Each
units
M6 6.6mm - 11mm - Plain 8 mm 80 mm HSS
RS Stock No. 508-9288
Mfr. Part No.05842
BrandEXACT
MYR50.57
Each
units
M4 4.5mm - 8mm - Plain 5 mm 71 mm HSS
RS Stock No. 508-9250
Mfr. Part No.05845
BrandEXACT
MYR103.97
Each
units
M8 9mm - 15mm - Plain 12.5 mm 100 mm HSS
RS Stock No. 508-9244
Mfr. Part No.05846
BrandEXACT
MYR118.99
Each
units
M10 11mm - 18mm - Plain 12.5 mm 100 mm HSS
Related Products
Introducing the G1368.0 from Dormer is a straight ...
Description:
Introducing the G1368.0 from Dormer is a straight shank Countersink bit, an essential accessory for any tradesman. Used for various types of materials and when using screws, bolts or rivets they can provide a flush neat finish. Designed with three ...
These HSS straight shank, right hand cutting long ...
Description:
These HSS straight shank, right hand cutting long series twist drills are capable of drilling up to 10x the drill diameter before the flute needs to be cleared, to avoid fouling. They are made to BS328/DIN340 RN and ISO standards, ...
Spot Weld drills are a range of cobalt ...
Description:
Spot Weld drills are a range of cobalt drills, designed for drilling out spot welds to release steel panels and sheets. Manufactured from premium grade cobalt steel for consistent and reliable performance, retaining a sharp cutting edge under extreme conditions. ...
Introducing the series of HSS-Co (Cobalt) Drill Bits ...
Description:
Introducing the series of HSS-Co (Cobalt) Drill Bits from Bosch. These high-performance drill bits are manufactured from alloyed high-speed steel to DIN 338 with 5% cobalt content making them resistant to heat and wear, making them ideal for use in ...