8-Pc HSS Countersink Drill Bit Set – Woodworking Chamfer
8-Pc HSS Countersink Drill Bit Set – Woodworking Chamfer
8-Piece HSS Countersink Drill Bit Set for Woodworking & Metal
Take your drilling projects to the next level with this professional-grade 8-piece HSS countersink drill bit set. Engineered from HSS 4241 high-speed steel with a titanium nitride coating, these bits cut cleanly through wood, plastic, aluminum, and other metals — delivering precise chamfered holes and smooth, burr-free edges every time.
Whether you're a seasoned woodworker or a weekend DIY enthusiast, this versatile set gives you everything you need to create perfect countersink, counterbore, and pilot holes in one pass. Each bit is paired with a wrench for quick, easy adjustments.
Key Features
- HSS 4241 Drill Head with titanium nitride coating for superior cutting performance and extended durability
- High-Speed Steel #45 Chamfer Body — heat-treated and tempered for toughness
- Single Flute, 90° Chamfer Angle for clean, accurate countersinking
- 15° Chamfer to enlarge holes and deburr edges effortlessly
- Round Shank compatible with standard drill chucks
- Works on: Wood, plastic, aluminum, steel, and other metals
- Each bit includes a dedicated wrench for fast, secure bit changes
Set Dimensions
| Diameter | Length |
|---|---|
| 3 mm | 52 mm |
| 4 mm | 67 mm |
| 5 mm | 85 mm |
| 6 mm | 90 mm |
| 7 mm | 103 mm |
| 8 mm | 115 mm |
| 10 mm | 120 mm |
What's Included
- 7 × Silver HSS Countersink Drill Bits (3 / 4 / 5 / 6 / 7 / 8 / 10 mm)
- 7 × Matching Wrenches (one per bit)
Material & Specifications
- Drill Head Material: HSS 4241 with titanium nitride coating
- Chamfer Body Material: No. 45 high-speed steel
- Shank Type: Round handle
- Made in China
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Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What materials can these HSS countersink drill bits be used on?
A: These HSS 4241 titanium-coated countersink drill bits are designed for use on wood, plastic, aluminum, steel, and other soft to medium-hard metals. The titanium nitride coating enhances hardness and reduces friction for cleaner cuts across all these materials.
Q: Do the bits fit standard drill chucks?
A: Yes. Each bit features a standard round shank that fits most conventional drill chucks, making them compatible with corded and cordless drills, drill presses, and similar tools.
Q: What is the chamfer angle on these drill bits?
A: These countersink drill bits feature a single-flute 90-degree chamfer angle with a 15-degree chamfer edge, ideal for countersinking screw heads flush with the surface and deburring hole edges cleanly.
Q: How many bits are in the set and what sizes are included?
A: The set contains 7 drill bits in sizes 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, and 10 mm, each supplied with its own wrench for easy, tool-free adjustments.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.