Dormer HSS 6.3 → 20.5 mm 6 piece 90° Countersink Drill Bit Set

  • RS Stock No. 812-6012
  • Mfr. Part No. G2363
  • Manufacturer Dormer
Product overview and Technical data sheets
Legislation and Compliance
RoHS Status: Not Applicable
COO (Country of Origin): SE
Product Details

Domer G2363 HSS TiAIN Countersink Set

Introducing the G2363 Countersink Set from Dormer is an essential accessory for any tradesman. Featuring six pieces to this set for various types of materials and when using screws, bolts or rivets they can provide a flush neat finish. Designed with three flutes per countersink to allow for a better chip clearance compared to four flutes to prevent any clogging from occurring. Every countersink is constructed from High-Speed Steel (HSS) providing exceptional hardness to prevent any wear hardness. In addition to the HSS, a TiAIN coating allows the countersink to maintain the high standard cutting at high temperatures. The coated bits can be operated at speeds up to 100% higher and for longer than uncoated countersink bits.

Features and Benefits

Includes six of the most popular sizes

For the production of 90° countersunk holes

Hex shank allows for high power transfer

Designed for use on a variety of materials (Wood, Plastic and Metals)

Triple flute design for efficient cutting

HSS and TiAIN coating increases hardness and high-temperature resistance

Manufactured to DIN 335C

Typical Applications

This Countersink Set is typically used by professional tradesmen, engineers or those wishing to finish off their project. These are commonly used to cut a hole to allow the head of a screw, bolt or rivet to sit flush or below the surface of the surrounding material. Most common countersink bits are the fluted countersink cutter, the angle of the flutes can vary for particular jobs. They are commonly used for:

Mechanical and industrial production


Fastening wood to metal

Dormer G2363 Set Includes (Diameters)

6.3 mm

8.3 mm

10.4 mm

16.5 mm

20.5 mm


Can you use this with a power drill?

Yes, this can be used with both a power drill and a battery drill. It doesn’t have the right connection for an SDS drill.


DIN 335C

Attribute Value
Head Diameter 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm
Drill Bit Type Countersink Set
Countersink Angle 90°
Number of Flutes 3
Material HSS
Number of Pieces 6
5 In stock for delivery within 6 working days
Price (VAT excluded) Each
TWD 7,347.00
(exc. GST)
TWD 7,714.00
(inc. GST)
Per unit
1 +