2-Pack 5-Flute Countersink Drill Bit Set – 1/4" Hex Shank 90°
2-Pack 5-Flute Countersink Drill Bit Set – 1/4" Hex Shank 90°
2-Pack Five-Flute Countersink Drill Bits with 1/4" Hex Shank
Get perfectly flush, clean-seated screw heads every time with this 2-pack of five-flute countersink drill bits. Engineered with a universal 1/4" hex shank, these bits fit any standard drill driver or impact driver — no adapter needed. The 90° chamfer angle creates precise, centered countersink holes in wood, soft metal, rubber, plastic, and other machinable materials with speed and ease.
Key Features
- 5-Flute Design: Five cutting flutes deliver smooth, fast material removal and clean chamfered edges without tear-out.
- 90° Countersink Angle: Ideal for sinking standard flathead screws flush or below the surface in wood and soft metals.
- 1/4" Hex Shank: Quick-change compatibility with most drills and impact drivers for effortless bit swaps.
- Heat-Treated 45# Carbon Steel: Hardened steel blades maintain a sharp cutting edge through repeated use, extending tool life.
- External Deburring: Doubles as a deburring tool to remove sharp burrs and rough edges from drilled holes.
- Versatile Use: Cuts cleanly in wood, soft metal, rubber, plastic, and other machinable materials.
- Perfectly Centered Holes: Self-centering geometry ensures consistent, accurate results every time.
Specifications
- Material: 45# Heat-Treated Carbon Steel
- Color: Gray
- Flute Type: 5-Flute, 90°
- Overall Length: 36 mm / 1.42 inches
- Cutting Diameter: Approx. 12.5 mm
- Shank Diameter: 6.35 mm (1/4 inch)
- Package Contents: 2 × Countersink Drill Bits
- Country of Origin: Made in Mainland China
What Can These Bits Be Used On?
These countersink bits are at home in the workshop and on the job site alike. Use them for furniture assembly, cabinet making, decking, trim carpentry, metal fabrication, and general DIY woodworking projects. They make quick work of preparing holes for flathead screws so the fastener sits perfectly flush every time.
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Frequently Asked Questions
Q: What materials can these countersink drill bits cut through?
A: These 5-flute countersink bits are designed to cut through wood, soft metals, rubber, plastic, and other machinable materials. They are best suited for softer substrates and are not recommended for hardened steel or masonry.
Q: Will these bits fit my existing drill or impact driver?
A: Yes. The 1/4" (6.35 mm) hex shank is a universal quick-change size that fits the vast majority of cordless drills, corded drills, and impact drivers without any additional adapter.
Q: What is the countersink angle on these bits?
A: These bits feature a standard 90° countersink angle, which is compatible with most flathead and countersunk screws used in woodworking and general construction applications.
Q: Can these be used for deburring as well as countersinking?
A: Absolutely. In addition to creating clean countersunk holes, the five-flute geometry works effectively as an external chamfer and deburring tool, smoothing sharp edges left by drilling on wood, plastic, and soft metal.