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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Description Price Drill Bit Type Head Diameter Countersink Angle Number of Flutes Material Overall Length Number of Pieces Shank Diameter Shank Length
RS庫存編號 215-439
BrandRS PRO
HK$175.63
單位
Countersink 10mm 90° - HSS 48 mm 1 8 mm 30.5mm
RS庫存編號 218-567
BrandRS PRO
HK$577.76
單位
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庫存編號 218-630
BrandRS PRO
HK$249.05
單位
Countersink 20mm 90° 3 HSS - 1 - -
RS庫存編號 248-5576
BrandRS PRO
HK$755.91
單位
Countersink Set 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm - - - - 6 - -
RS庫存編號 508-8982
製造零件編號05649
BrandEXACT
HK$783.46
整套:1 個
Set(s)
Countersink Set 20.5mm 90° 3 HSS - 9 - -
RS庫存編號 215-495
BrandRS PRO
HK$266.22
單位
Countersink 15mm 90° - HSS 65 mm 1 10 mm 37.5mm
RS庫存編號 423-848
BrandRS PRO
HK$228.59
單位
Countersink 14mm 90° - HSS 48 mm 1 7.15 mm 20mm
RS庫存編號 215-423
BrandRS PRO
HK$123.17
單位
Countersink 5mm 90° - HSS 45 mm 1 6 mm 32mm
RS庫存編號 812-6021
製造零件編號G5706.3
BrandDormer
HK$386.21
單位
Countersink 6.3mm 90° 3 HSS 45 mm 1 5 mm -
RS庫存編號 215-445
BrandRS PRO
HK$271.51
單位
Countersink 15mm 90° - HSS 65 mm 1 10 mm 37.5mm
RS庫存編號 508-8819
製造零件編號05506
BrandEXACT
HK$55.75
單位
Countersink 6.3mm 90° 3 HSS 45 mm 1 5 mm -
RS庫存編號 218-551
BrandRS PRO
HK$92.99
單位
Countersink 6mm 90° 3 HSS - 1 - -
RS庫存編號 218-668
BrandRS PRO
HK$153.81
單位
Countersink 10mm 90° 3 HSS - 1 - -
RS庫存編號 509-0036
製造零件編號05510
BrandEXACT
HK$60.92
單位
Countersink 8.3mm 90° 3 HSS 50 mm 1 6 mm -
RS庫存編號 218-602
BrandRS PRO
HK$117.48
單位
Countersink 8mm 90° 5 HSS - 1 - -
全新
RS庫存編號 194-7921
製造零件編號D-42204
BrandMakita
HK$538.02
整套:1 個
Set(s)
Countersink Set 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm - - - - 6 - -
RS庫存編號 136-3949
製造零件編號G10612.4
BrandDormer
HK$357.01
單位
Countersink 12.4mm 90° 3 HSS 56 mm 1 8 mm -
RS庫存編號 666-7426
製造零件編號G13620.5
BrandDormer
HK$412.18
單位
Countersink 20.5mm 90° 3 HSS 63 mm 1 10 mm -
RS庫存編號 423-832
BrandRS PRO
HK$127.13
單位
Countersink 10.4mm 90° 5 HSS 31 mm 1 7.15 mm 21.5mm
RS庫存編號 423-810
BrandRS PRO
HK$110.46
單位
Countersink 10.4mm 90° 3 HSS 34 mm 1 7.15 mm 21.5mm