2-Pc 5-Flute Countersink Drill Bit Set – 1/4" Hex Shank, 90°
2-Pc 5-Flute Countersink Drill Bit Set – 1/4" Hex Shank, 90°
2-Piece Five-Flute Countersink Drill Bit Set with 1/4" Hex Shank
Get perfectly flush, professional-looking screw heads every time with this 2-piece countersink drill bit set. Featuring a five-flute, 90-degree chamfer design and a universal 1/4" hex shank, these bits fit most standard power drills and drill drivers for fast, accurate results on the job site or in the workshop.
Made in Mainland China.
Key Features
- Five-Flute Design: The 5-flute cutting geometry creates clean, smooth countersink holes with minimal tear-out, giving screw heads a perfectly seated, flush finish every time.
- 90-Degree Chamfer Angle: Ideal for sinking standard flat-head screws into wood and soft metals — no unsightly raised or uneven screw heads.
- Universal 1/4" Hex Shank: Fits virtually all power drills and quick-change bit holders, making tool changes fast and easy.
- Heat-Treated 45# Carbon Steel: The heat-treated carbon steel construction delivers excellent hardness and durability for extended tool life in demanding workshop conditions.
- Versatile Compatibility: Cuts quickly and cleanly in wood, soft metal, rubber, plastic, and other machinable materials — one set for a wide range of projects.
- Consistently Centered Holes: Self-centering action ensures holes are always perfectly aligned for properly seated screw heads on every pass.
- Deburring Capability: Also functions as an external chamfer/deburring tool to clean up rough edges on drilled holes.
Specifications
- Material: 45# Carbon Steel (Heat Treated)
- Color: Gray
- Type: 5 Flute, 90-Degree Countersink
- Overall Length: 36 mm (approx. 1.42 in)
- Head Diameter: Approx. 12.5 mm
- Shank Diameter: 6.35 mm (1/4 in) Hex
- Quantity: 2 pieces per pack
What's in the Box
- 2 × Five-Flute Countersink Drill Bits (1/4" Hex Shank)
Perfect For
- Woodworking, carpentry, and cabinet making
- DIY home improvement projects
- Metalworking with soft metals
- Furniture assembly and repair
- Plastic and rubber fabrication
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Note: Please allow 0–1 cm variance due to manual measurement. Monitor color calibration may cause slight color differences from actual product.
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Frequently Asked Questions
Q: What materials can these countersink drill bits be used on?
A: These five-flute countersink drill bits are designed to work effectively on a wide range of materials including wood, soft metals, rubber, plastic, and other machinable materials. They are especially well-suited for woodworking and general DIY projects where flush screw installation is required.
Q: What drill or driver is compatible with the 1/4" hex shank?
A: The 1/4-inch hex shank is a universal standard that fits the vast majority of cordless and corded power drills, impact drivers, and quick-change bit holders available today — making these bits extremely easy to use with your existing tools.
Q: How many flutes do these countersink bits have, and why does it matter?
A: These bits feature a five-flute design. More flutes mean smoother cuts with less vibration and tear-out, resulting in cleaner countersink holes and a more professional finish compared to single- or three-flute alternatives.
Q: Can these bits also be used for deburring?
A: Yes! In addition to countersinking, these bits function as an external chamfer and deburring tool. They can be used to clean up rough or sharp edges left on drilled holes in metal, plastic, or wood for a clean, finished look.