Countersink bits for wood

Wood countersink bits are used to create recesses for screw heads and to clean up the mouth of drilled holes in wood. The group covers 11 codes, arranged by mounting method and guiding method: countersink sleeves that clamp directly onto the drill bit body include 2100, 2101 (HSS high-speed steel) and 3537 with five cutting edges at a 90° angle; screw-head countersink bit 3573 in Chrome Vanadium steel; 3577- supplied with a depth stop ring, available in three sizes Ø4, Ø5, Ø6mm; countersink with HSS pilot drill 3572 with 1/4 inch hex shank.

The 90° countersink cutter group includes 3532 with E6,3 shank, 3533 with plastic handle Ø12-16mm, 2115 Ø13-20mm and 1775 Ø10-30mm. The overall diameter range spans Ø3mm to Ø30mm. The content below analyses how to choose according to hole diameter, the machine available and the chamfer depth, suited to interior fit-out and joinery work. Most codes carry the FAMAG brand, genuine imported goods.

Wood countersink bits serve the task of creating recesses for screw heads and cleaning up the mouth of drilled holes. This group gathers countersink sleeves mounted together with a drill bit, screw-head countersink bits, countersinks and 90° countersink cutters. Most codes in the group carry the FAMAG brand. The diameter range spans Ø3mm to Ø30mm, covering many screw sizes and many different hole depths.

The codes are arranged by mounting method and guiding method. Some types clamp directly onto the body of the drill bit in use. Some types have a hex shank that fits into a screwdriver or drill. Some types have a plastic handle for manual operation. Users choose according to hole diameter, the machine available and the requirement for chamfer depth.

The countersink sleeve clamps onto the drill bit in use, allowing drilling and countersinking in a single operation. This method keeps the drilled hole and the chamfered part concentric. The countersink sleeve group in this product range includes three codes, distinguished by the corresponding drill bit diameter range and by the manufacturing material.

• 2100 is used for Ø3 - 10mm wood countersink drill bits, made by FAMAG Germany. 2101 covers the same Ø3 – 10mm range but is made from HSS high-speed steel. These two codes cover the common wood screw sizes in interior fit-out and wooden frame assembly.
• 3537 is intended for Ø3-6mm wood countersink drill bits. The five-cutting-edge design with a 90° point angle gives a flat, even chamfered surface. The body clamps onto a drill bit of the corresponding diameter. This is a common tool type in joinery and woodworking, when pilot drilling and countersinking of the hole mouth are needed continuously.

Screw-head countersink bits and guided countersinks

This group combines the pilot drilling part and the chamfering part on a single body. Users do not have to change bits between the two steps. The three codes in the group differ in material, depth control method and shank type. The choice depends on whether you need a fixed depth or flexible adjustment at each screw position.

• 3573 machines recesses for screw heads on wood surfaces. Chrome Vanadium steel gives high hardness and wear resistance. The bit diameter range from 3mm to 10mm covers many standard screw sizes. This wide range suits projects using many screw sizes within the same work item.
• 3577 connects with a stop ring to fix the drilling depth as required. Three diameter versions are available: Ø4, Ø5 and Ø6mm. A steel stop plate is included, with a set screw on the body used to lock the position. This arrangement keeps the depth uniform when drilling a series of identical holes.
• 3572 combines a countersink with a pilot drill section, with lengths from 25 to 83mm. All drill bits in this line have a 1/4 inch hex shank. The hex shank fits quickly into the chuck of a handheld screwdriver. One operation completes both the pilot hole and the chamfer at the hole mouth.

Countersinks and 90° countersink cutters

The 90° countersink group works on holes that have already been drilled. They create a recess for a countersunk screw head or clean wood chips around the hole edge. Diameters are larger than in the countersink sleeve group, spanning Ø10mm to Ø30mm. The shank type and handle type determine whether you work with a machine or by hand.

• 1775 countersinks wood holes at 90° with diameters from Ø10mm to Ø30mm. A name closer to actual practice is wood hole chamfering. Common applications include creating recesses for screw heads and chamfering holes in wood after drilling and cutting. The wide diameter range handles both small holes and large bolt holes.
• 3532 is made in Germany, with a five-cutting-edge design and a 90° chamfer angle. This code is used to chamfer drilled hole edges in joinery and wood processing. The hex shank is 6,3 mm, equivalent to 1/4 inch. This shank size is compatible with most quick chucks on drills and screwdrivers.
• 3533 has a plastic handle, a Ø12-16mm range and a 90° angle. The plastic grip is moulded to the shape of the hand, resisting slipping when turning. A hanging hole is provided at the shank end for hooking the tool onto a board. This code suits chamfering a few holes on the spot when it is not convenient to bring out a machine.
• 2115 has a 90 degree point, diameter 13-20mm, and is also called a radial hole drill bit. The chip evacuation path is directed into the inside of the cutter head. This structure suits shallow holes drilled at speed. The shank diameter fitting into the machine follows the specification of each version.

Besides the wood cutting bits, this product group also contains an insulating accessory used for magnetic drills. This part fits onto the machine body and does not take part directly in the cutting process. Users add it when their equipment belongs to the corresponding line and a replacement part with the correct code is needed. B60.0004 from Euroboor is the insulating part for the B60, made of rubber. The EAN code recorded is 8719497119684. The cutting depth specification is stated as 55 mm, with the metric system of measurement. The application stated in the documentation is beveling, that is, chamfering.

How to choose according to work requirements

The first step is to determine the diameter of the screw or the hole to be chamfered. For small screws of Ø3-6mm, the countersink sleeve codes and combination bits are sufficient. For larger holes from Ø10mm upwards, the 90° countersink group is more suitable. Then consider the shank type, since the 1/4 inch hex shank fits quickly into a handheld screwdriver.

The third factor is the depth requirement. When many identical holes are needed, a stop ring fixing the depth helps keep results uniform. When only a few points are being worked on, the version with a plastic handle is quick enough to operate. The bit body material, including Chrome Vanadium and HSS, is also part of the comparison criteria between codes. You can open each code above to see the detailed description and the specific size range. Contact the technical team if you need to check the shank fitting against your existing machine.