AYTJRDCBSHSS Countersink Drill DCBS已售出0個HSS Countersink Drill DCBS, a step drill cutting the hole and countersink in one pass so flat-head screws sit flush - a practical countersink drill. Body diameter 7.5~18.5mm, overall length 44~76mm, available in 5 sizes. Works on carbon steel, alloy steel plus aluminum, copper and other non-ferrous metals up to HRC30. Japanese brand, consistent quality.
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Countersink Drill
Product Overview: HSS Countersink Drill – DCBS Series
【Product Features & Why We Recommend It】
- Japanese Brand Professional Quality: Originating from a professional Japanese cutting tool brand with rigorous quality control — recommended for users with high demands on countersunk screw hole forming accuracy and tool consistency.
- Countersink Dedicated Tapered Geometry: Features a countersink drill dedicated tapered forming geometry — recommended for single-pass precision forming of flat head screw and countersunk screw tapered seating surfaces, ensuring taper angle profile and seat surface finish meet screw head fit requirements to achieve the standard assembly result of screws fully flush with the workpiece surface.
- Simultaneous Drilling and Taper Forming: Specially designed to complete both the bottom hole drilling and countersink tapered seating surface forming in a single operation — recommended for high-efficiency countersunk screw hole machining applications, effectively reducing machining time compared to the two-step drill-then-chamfer process.
- Compact Specification Dedicated Coverage: Available in diameter 7.5–18.5mm, flute length 11–25mm, and overall length 44–76mm across 5 specifications — recommended for precise selection based on countersunk screw specifications and workpiece hole diameter, suitable for precision forming needs of common countersunk screw hole dimensions.
- Broad Material Compatibility: Covers carbon steel, alloy steel through to aluminum alloys and non-ferrous metals such as copper — recommended as the standard configuration tool for general-purpose countersunk screw hole machining.
【Machining Applications & Uses】
- Primary Use: Countersunk screw tapered seating surface one-piece forming, flat head screw counterbore precision machining, and simultaneous tapered chamfer and pilot hole drilling.
- Recommended Work Materials:
- P-Class (Carbon Steel / Alloy Steel): Structural steel, carbon steel, and alloy steel — recommended for hardness below HRC30, where the countersink drill tapered geometry delivers stable one-piece forming cutting performance.
- N-Class (Non-Ferrous Metals): Aluminum alloys, pure copper, brass, and other non-ferrous metals — use of appropriate cutting fluid is recommended to ensure smooth chip evacuation and tapered surface quality during countersink hole forming.
