Product Description
CMT Dowel Drill with Countersink - 10x12x57mm, 10x28mm Shank, Right-Hand Rotation by CMT is a precision-engineered boring tool designed for drilling and countersinking in a single pass on CNC boring machines and multi-spindle panel processing equipment. The integrated countersink creates a clean, flush recess for bolt heads and panel connectors, eliminating the need for a separate tool change and making it a go-to solution for high-efficiency cabinet and furniture production. The carbide-tipped (HW) cutting head, combined with a PTFE-coated spiral and precision-ground geometry, delivers consistent, chip-free results in chipboard, MDF, hardwood, plywood, and coated panels alike.
Key Features
- Super-strength steel body with HW (carbide) cutting head - the tungsten carbide tip maintains a sharp cutting edge through high-volume production runs, reducing downtime from frequent resharpening or bit replacement.
- PTFE-coated spiral flutes (orange or black) - the non-stick coating prevents pitch and glue buildup in the flutes, so the bit stays cleaner longer and chip evacuation remains efficient even in adhesive-coated or resin-rich panel materials.
- Precision-balanced centre point - ensures accurate, on-target hole placement with minimal wandering at the start of the bore, which is critical for dowel-joint alignment in cabinet and furniture panels.
- 2 precision-ground cutting edges (Z2) - dual cutting edges share the load evenly, producing smooth bore walls and flat-bottomed holes while extending overall tool life.
- 2 ground spurs (V2) - outer spurs score the material fibers ahead of the cutting edges, resulting in clean, tear-free entry holes on laminates, coated panels, and veneered surfaces.
- Integrated countersink geometry - drills and countersinks in one operation, creating a precise recess for bolt heads or connector hardware without a secondary tooling step, saving cycle time on CNC boring centers.
- Parallel shank with driving flat and length-adjusting screw (10x28mm) - the driving flat prevents shank slippage under load, and the adjusting screw allows precise depth-setting for repeatable countersink depth across production batches.
- Right-hand (RH) rotation - compatible with the standard spindle direction of most CNC boring machines, multi-spindle boring centers, and boring machines fitted with an adapter or chuck.
Why This Product
- Combining drilling and countersinking into a single 57.5mm tool eliminates the need for a secondary countersink operation, reducing machine cycle time and tooling changeovers in panel processing and cabinet manufacturing workflows.
- The HW carbide cutting head paired with a PTFE-coated spiral is engineered specifically for abrasive engineered wood products - chipboard, MDF, HDF, and laminates - where standard steel bits wear quickly, making this a durable choice for production-volume boring.
- Ground spurs and a precision-balanced centre point work together to produce clean entry holes on coated and veneered panels, reducing the sanding and touch-up time that rough-bore bits typically require.
- The 10x28mm parallel shank with driving flat and length-adjusting screw provides a secure, slip-free grip and repeatable depth control, making this bit well-suited for automated CNC boring centers where consistent countersink depth is required from panel to panel.
Specifications
- Manufacturer Part Number: 376.100.11
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 12mm
- Total Length: 57.5mm
- Shank: 10x28mm
- Rotation: Right-Hand (RH)
- Number of Spurs: 2 (V2)
- Number of Cutting Edges: 2 (Z2)
- Number of Spiral Flutes: 2
- Blade Material: HW (Carbide-Tipped)
Approved Applications
- Drilling and countersinking in one pass on boring machines and CNC boring centers
- Bolt head and panel connector recessing in furniture and cabinet panels
- Dowel-joint hole boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
- Panel processing on multi-spindle CNC boring machines and panel processing centers
- Use on boring machines fitted with an adapter or chuck accepting a 10x28mm parallel shank
Frequently Asked Questions
What is the difference between a standard dowel drill and this dowel drill with countersink?
A standard dowel drill bores a cylindrical hole for a dowel pin. This CMT 376.100.11 adds an integrated countersink above the bore, creating a recessed seat for a bolt head or panel connector hardware in the same single pass - eliminating the need for a separate countersinking step or tool change.
What does the PTFE coating on the spiral flutes actually do in practice?
The PTFE (polytetrafluoroethylene) coating creates a low-friction, non-stick surface on the spiral portion of the bit. In panel materials that contain adhesives, resins, or melamine coatings - such as chipboard and coated panels - this coating prevents pitch and glue from bonding to the flutes, keeping chip evacuation clear and reducing heat buildup that can dull the cutting edges prematurely.
How does the length-adjusting screw on the shank work?
The parallel shank includes both a driving flat and a length-adjusting screw. The driving flat locks into the boring machine spindle to prevent rotation under load, while the adjusting screw allows the operator to set and lock the exact projection depth of the bit. This enables repeatable, consistent countersink and bore depth across an entire production run without re-measuring after each tool installation.
Which panel materials is this dowel drill with countersink compatible with?
The HW carbide cutting head and precision-ground spurs make this bit suitable for chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels. The carbide tip and PTFE coating are particularly effective in abrasive engineered wood products and resin-impregnated laminates that would wear down standard steel bits quickly.
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