3-Pack 90° Countersink Drill Bits – 1/4" Hex Shank Chamfer Set
3-Pack 90° Countersink Drill Bits – 1/4" Hex Shank Chamfer Set
3-Pack 90° Countersink Drill Bits with 1/4" Hex Shank
Upgrade your woodworking and carpentry toolkit with this 3-piece set of 90-degree countersink chamfer drill bits. Engineered for precision, these six-flute chamfering tools make clean, accurate recesses for screw heads and remove burrs effortlessly from wood, plastic, and soft metal surfaces.
Key Features
- 90° Chamfer Angle – Delivers precise bevel cuts and countersinks for flush screw fitting every time
- 1/4" Hex Shank (6.35 mm) – Compatible with virtually all standard drill drivers and quick-change chuck systems
- Six-Flute Design – Multiple cutting edges ensure smooth, clean results with minimal tear-out
- 45# High Carbon Steel – Tough, hardwearing material built to withstand repeated use across a variety of materials
- Sandblasted Surface Finish – Reduces friction for cooler, more controlled cutting performance
- Compact Dimensions – Outer diameter 12.7 mm (–0.3 mm tolerance), length 36 mm; fits into tight spaces with ease
- 3-Piece Set – Great value multi-pack so you always have a spare on hand for the job
Ideal For
- Countersinking screw holes in wood or plastic boards
- Deburring drilled holes for a professional, smooth finish
- Cabinet making, furniture assembly, and general carpentry
- DIY home improvement and craft projects
Specifications
| Quantity | 3 Pieces |
| Shank Type | 1/4" Hex (6.35 mm) |
| Outer Diameter | 12.7 mm (−0.3 mm tolerance) |
| Length | 36 mm |
| Flutes | 6 |
| Angle | 90° |
| Material | 45# High Carbon Steel |
| Surface Treatment | Sandblasted |
| Country of Origin | Made in China |
Related Tools You May Like
- Garden Pruner Shears – Secateurs for Bonsai & Fruit Trees
- Air Compressor Pressure Gauge 0–10/0–12/0–25 Bar | DIY Tool
- 18 Pc Basswood Carving Blocks – Whittling Wood Kit for Carvers
Note: Please allow 1–3 mm differences due to manual measurement. Colors may vary slightly depending on your monitor settings.
Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What materials can these 90-degree countersink drill bits be used on?
A: These 1/4" hex shank chamfer drill bits are primarily designed for wood and plastic boards but can also be used on soft metals. They are ideal for woodworking, carpentry, cabinet making, and DIY projects where flush screw recesses or smooth burr-free holes are needed.
Q: Will these countersink bits fit my existing drill driver?
A: Yes. The standard 1/4" (6.35 mm) hex shank is compatible with the vast majority of cordless and corded drill drivers, impact drivers, and quick-change chuck systems available on the market today.
Q: Why do I need a 6-flute chamfer bit instead of a standard drill bit?
A: A six-flute countersink chamfer bit is specifically designed to create a conical recess (countersink) that allows screw heads to sit flush with or below the surface. The multiple flutes distribute cutting load evenly, producing a cleaner, smoother finish than a standard twist drill bit. This set's 90° angle is the most common standard for wood screws.
Q: How do I keep these drill bits in good condition?
A: After each use, remove any wood chips or debris from the flutes with a brush. Store the bits in a dry location to prevent moisture contact. The 45# high carbon steel construction is hardwearing, but avoiding contact with hard metals during storage will help maintain the cutting edge for longer.