6pcs HSS 90?? Countersink Drill Bit Set 3 Flute Chamfering Tool for Steel Wood

6-Piece HSS 90-Degree Countersink Drill Bit Set

This 6-piece HSS 90-degree countersink drill bit set features three-flute chamfering tools designed to create precise, clean countersunk holes in wood, plastic, and soft metals.

Overview

This 6-piece HSS 90-degree countersink drill bit set provides a complete range of sizes for flush screw mounting in carpentry and metal fabrication. Crafted from high-speed steel, this 6-piece HSS 90-degree countersink drill bit set ensures clean cuts with minimal chatter. This versatile 6-piece HSS 90-degree countersink drill bit set is an essential addition to any workshop or job site toolkit.

Built For Performance

• Constructed from high-speed steel (HSS) for outstanding hardness and heat resistance.
• Features a 90-degree tip angle for perfect screw head flush-mounting.
• Designed with a 3-flute geometry to reduce vibration and prevent chip clogging.
• Includes six standard sizes ranging from small detailed work to larger pilot holes.
• Equipped with round shanks that fit securely in standard handheld drill chucks.

On-The-Job Use

• Creating countersunk holes in wooden furniture to hide screw heads.
• Chamfering and deburring pre-drilled holes in mild steel and aluminum.
• Preparing pilot holes in plastic sheets to prevent splitting during assembly.

Specs At A Glance

Good To Know

Q: Can these drill bits be used on stainless steel? A: While highly durable, HSS is best suited for wood, plastic, aluminum, and mild steel; harder metals may require cobalt or carbide tools.

Q: Why does a 3-flute design perform better than a single flute? A: The 3-flute design distributes the cutting load more evenly, reducing chatter and leaving a much smoother finish on the countersunk hole.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.