Countersink drill bit KWB 704410 1.6 cm diameter 1 pc

This high-quality KWB countersink drill bit creates precise conical recesses for screw heads in wood and non‑ferrous metals. It features a five‑edged tip for accurate cutting, an 8 mm cylindrical shank for stable mounting, and a 50 mm overall length that balances reach and control. Manufactured from carbon steel with a corrosion‑resistant black oxide finish, the tool is intended for repeated use and consistent performance. Available head diameters include 8 mm, 12 mm, 16 mm and 20 mm; the listed product has a 16 mm (1.6 cm) head diameter.

Advantages

The five‑edged tip provides clean, concentric countersinks with reduced chatter. The carbon steel construction with black oxide coating increases wear resistance and provides basic corrosion protection. The 8 mm cylindrical shank ensures secure clamping in standard chucks or drill holders, while the 50 mm overall length offers a practical balance between accessibility and control during machining.

Suitable for

• Creating flush countersinks for screw heads in wood
• Countersinking in non‑ferrous metals (e.g., brass, aluminum)
• Workshop and DIY projects requiring precise screw recesses

Key specifications

• Head diameter: 16 mm (1.6 cm)
• Shank type and diameter: cylindrical, 8 mm
• Overall length: 50 mm
• Tip geometry: five‑edged cutting tip
• Material: carbon steel
• Surface finish: black oxide (corrosion resistant)

How to use

Mount the countersink bit in a suitable drill chuck or holder with an 8 mm compatible clamp. Set drill speed appropriate for the work material—lower speeds for non‑ferrous metals, moderate speeds for wood—and apply steady, moderate pressure to produce a uniform conical recess. Periodically withdraw the bit to clear chips and prevent heat buildup. For final accuracy, perform a test cut on scrap material and adjust depth or speed as required.

Usage recommendations

Use cutting lubricant when countersinking non‑ferrous metals to reduce heat and extend tool life; avoid excessive axial force to maintain tip geometry and ensure concentric, clean countersinks.