CMT Dowel Drill with Countersink - 5/16" x 15 x 70mm, 10x38mm Shank, Right-Hand by CMT is a precision-engineered boring tool designed to drill a clean dowel hole and countersink in a single pass, eliminating the need for a separate countersinking step in panel processing and cabinet assembly operations. Built on a super-strength steel body with a tungsten carbide (HW) cutting head and a PTFE-coated spiral, this right-hand rotation drill handles chipboard, MDF, HDF, plywood, laminates, coated panels, hardwood, and softwood with repeatable accuracy on multi-spindle CNC boring machines and boring centers.

Key Features

• Tungsten Carbide (HW) Cutting Head on Super-Strength Steel Body - the hard-wearing carbide tip maintains a sharp cutting edge through high-volume panel production runs, reducing downtime for tool changes.
• PTFE-Coated Spiral Flutes - the orange or black PTFE (polytetrafluoroethylene) coating on the spiral portion prevents pitch and glue buildup, keeping flutes clear during continuous boring and extending overall tool service life.
• Precision-Balanced Centre Point - centers the drill accurately on the target location at entry, producing consistently positioned holes and reducing wander on coated or laminated surfaces.
• 2 Precision-Ground Cutting Edges (Z2) - twin cutting edges share the load evenly, delivering smooth, flat-bottom holes with minimal heat generation.
• 2 Negatively Ground Spurs (V2) - negatively sharpened spurs score the material perimeter cleanly before the main cutters engage, preventing tearout and chipout on laminates and coated panels.
• Integrated Countersink - combines drilling and countersinking in one tool pass, creating a clean recess for bolt heads or connectors without a secondary operation, saving cycle time.
• 2 Spiral Flutes - efficient chip evacuation through twin flutes keeps the bore clear, reducing heat buildup and improving hole quality in dense materials like HDF and hardwood.
• Parallel Shank with Driving Flat and Length Adjusting Screw (10x38mm) - the standardized shank seats securely in multi-spindle boring heads and CNC boring centers, while the adjusting screw allows fine depth-of-projection tuning for consistent countersink depth across a full spindle row.
• Right-Hand Rotation (RH) - matches the standard spindle direction of the vast majority of CNC panel boring machines and boring centers, making this a drop-in fit for existing setups.

Why This Product

• One-Pass Drilling and Countersinking - the integrated countersink geometry means a single plunge creates both the dowel bore and the connector recess, reducing machine cycle time and eliminating a separate tooling station in panel processing lines.
• Clean Results on Finished Panel Materials - the combination of negatively ground spurs and a precision-balanced centre point targets chipboard, MDF, HDF, laminates, and coated panels where tearout-free entry and exit holes are critical to finished-product quality.
• PTFE Coating for Sustained Performance in Production - in high-throughput environments where glue or pitch residue is common, the PTFE-coated spiral keeps the tool cutting freely between scheduled maintenance intervals, protecting production rates.
• Standardized 10x38mm Shank with Depth Adjustment - the parallel shank with driving flat and length adjusting screw is compatible with multi-spindle CNC boring machines and boring centers, and the depth-adjustment feature allows operators to dial in countersink depth precisely across an entire row of spindles without custom tooling.

Specifications

• Manufacturer Part Number: 377.081.11
• Brand: CMT Orange Tools
• Diameter: 5/16"
• Cutting Height: 15mm
• Total Length: 70mm
• Shank: 10x38mm
• Rotation: Right-Hand (RH)
• Number of Cutting Edges: 2 (Z2)
• Number of Spurs: 2 (V2)
• Spur Sharpening: Negatively ground spurs
• Material: HW (Tungsten Carbide) head on super-strength steel body
• Spiral Coating: PTFE (orange or black)

Approved Applications

• Drilling and countersinking in one pass on panel materials
• Bolt head and connector recessing in thicker panel stock
• Dowel boring on CNC multi-spindle boring machines
• Panel processing on boring centers and panel processing centers
• Use with a boring machine fitted with an adapter or chuck accepting a 10x38mm parallel shank