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 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
  1. 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 on centre.
  2. 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 using 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 centering 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
MaterialsThese countersink cutter drill bits are made from HSS (High-Speed Steel) which can withstand high temperatures without losing its hardness.

...
Read more Read less

Filters

Viewing 21 - 40 of 88 products
Results per page
Description Price Head Diameter Countersink Angle Number of Flutes Material Overall Length Shank Diameter Shank Length
RS Stock No. 673-8717
BrandRS PRO
MYR111.95
Each
units
16.5mm 90° 3 HSS 63 mm 10 mm 42mm
RS Stock No. 218-602
BrandRS PRO
MYR68.89
Each
units
8mm 90° 5 HSS - - -
RS Stock No. 562-533
BrandRS PRO
MYR80.14
Each
units
10mm 90° 3 HSS 39 mm 6.35 mm 20.5mm
RS Stock No. 423-822
BrandRS PRO
MYR131.54
Each
units
20.5mm 90° 3 HSS 43 mm 7.15 mm 21.5mm
RS Stock No. 673-8704
BrandRS PRO
MYR59.52
Each
units
10.4mm 90° 3 HSS 50 mm 6 mm 36mm
RS Stock No. 423-872
BrandRS PRO
MYR70.39
Each
units
8.3mm 90° 3 HSS 32 mm 7.15 mm 21.5mm
RS Stock No. 673-8701
BrandRS PRO
MYR53.52
Each
units
8.3mm 90° 3 HSS 50 mm 6 mm 38mm
RS Stock No. 218-624
BrandRS PRO
MYR180.60
Each
units
25mm 90° 3 HSS - - -
RS Stock No. 218-595
BrandRS PRO
MYR77.60
Each
units
12mm 90° 5 HSS - - -
RS Stock No. 673-8708
BrandRS PRO
MYR73.00
Each
units
12.4mm 90° 3 HSS 56 mm 8 mm 41mm
RS Stock No. 215-439
BrandRS PRO
MYR102.99
Each
units
10mm 90° - HSS 48 mm 8 mm 30.5mm
RS Stock No. 218-573
BrandRS PRO
MYR116.27
Each
units
20mm 90° 5 HSS - - -
RS Stock No. 673-8710
BrandRS PRO
MYR121.46
Each
units
20.5mm 90° 3 HSS 63 mm 10 mm 42mm
RS Stock No. 423-838
BrandRS PRO
MYR101.78
Each
units
15.3mm 90° 5 HSS 32 mm 7.15 mm 21.5mm
RS Stock No. 218-652
BrandRS PRO
MYR86.93
Each
units
12mm 90° 3 HSS - - -
RS Stock No. 423-848
BrandRS PRO
MYR121.50
Each
units
14mm 90° - HSS 48 mm 7.15 mm 20mm
RS Stock No. 218-551
BrandRS PRO
MYR56.05
Each
units
6mm 90° 3 HSS - - -
RS Stock No. 499-396
Mfr. Part No.4405713
BrandEXACT
MYR77.24
Each
units
10.4mm 90° 3 HSS-E 50 mm 6 mm -
RS Stock No. 508-9064
Mfr. Part No.05520
BrandEXACT
MYR77.44
Each
units
20.5mm 90° 3 HSS 63 mm 10 mm -
RS Stock No. 508-9799
Mfr. Part No.05515
BrandEXACT
MYR46.24
Each
units
12.4mm 90° 3 HSS 56 mm 8 mm -
Related Products
• Hammer drill with TURBOKEIL centre point and ...
Description:
• Hammer drill with TURBOKEIL centre point and MS5 spirals• Chrome-nickel-molybdenum steel, shot-peened and austempered• Perfect spot-drilling and optimum drilling results, even in reinforced concrete• Optimum power transmission and controlled clearing of drilling dust• Suitable for all ...
Solid Carbide Jobber drill bit for general machining ...
Description:
Solid Carbide Jobber drill bit for general machining applications up to x4 diameter120° four-facet point for accurate centering and improved hole qualityBright finishManufactured to DIN338 standards.
HSCo high performance Jobber length drill for machining ...
Description:
HSCo high performance Jobber length drill for machining deep holes in most materials up to x6 diameter. Parabolic flute design enables rapid chip evacuationAllows greater drilling depths without the need for 'pecking'130° special point geometry for excellent centring capability and ...
HSCo high performance Jobber length drill for machining ...
Description:
HSCo high performance Jobber length drill for machining deep holes in most materials up to x3 diameter. Parabolic flute design enables rapid chip evacuationAllows greater drilling depths without the need for 'pecking'130° special point geometry for excellent centring capability and ...