CMT Dowel Drill with Countersink - 5/16" x 12 x 57mm, 10x28mm Shank, Right-Hand by CMT is a precision-engineered boring tool designed to drill and countersink in a single pass on dedicated boring machines and CNC panel processing equipment. Built on a super-strength steel body with a tungsten carbide (HW) cutting head, this right-hand rotating drill delivers clean, accurate holes with countersunk recesses for bolt heads and panel connectors - making it a go-to choice for cabinet manufacturing, furniture production, and panel joinery work. The spiral portion is coated with P.T.F.E. to resist pitch and adhesive buildup, keeping cutting performance consistent across long production runs.

Key Features

• HW (Tungsten Carbide) Cutting Head - provides exceptional hardness and edge retention when boring engineered panels, hardwood, softwood, and coated materials, reducing downtime from frequent resharpening.
• Super-Strength Steel Body with P.T.F.E. Spiral Coating - the orange or black P.T.F.E. coating on the spiral flutes prevents pitch and glue from sticking, maintaining chip evacuation and extending tool life during high-volume boring runs.
• 2 Precision-Ground Cutting Edges (Z2) - dual cutting edges deliver balanced cutting forces and a smooth, flat-bottom hole, reducing tear-out in chipboard, MDF, and laminated panels.
• 2 Ground Spurs (V2) - precision-ground spurs score the material fibers ahead of the main cutting edges, producing clean bore walls and crisp entry holes with minimal surface damage.
• Integrated Countersink Design - drills and countersinks simultaneously in a single plunge, eliminating the need for a separate countersinking step and increasing throughput on boring centers and multi-spindle machines.
• Precision Balanced Centre Point - the HW centre point locates the drill accurately on the workpiece, ensuring repeatable hole positioning across panel runs and reducing setup error.
• 2 Spiral Flutes - twin flutes efficiently evacuate chips from the bore, preventing clogging and heat buildup that can cause burning or surface defects in dense engineered wood products.
• 10x28mm Parallel Shank with Driving Flat and Length Adjusting Screw - the parallel shank secures firmly in boring machine chucks and adapters while the length adjusting screw allows precise depth setting for consistent countersink depth across every hole.
• Right-Hand (RH) Rotation - compatible with standard right-hand boring machine spindles, making this drill a straightforward replacement or addition in existing CNC boring center tooling setups.

Why This Product

• Combining drilling and countersinking into a single-pass operation reduces cycle time and eliminates tool changes on multi-spindle CNC boring machines and panel processing centers - directly improving production throughput.
• The carbide (HW) cutting head paired with precision-ground Z2 edges and V2 spurs produces clean, accurate bores in demanding materials such as chipboard, MDF, HDF, laminates, and coated panels where edge quality matters for visible joinery.
• The P.T.F.E.-coated spiral extends the service interval between cleanings and replacements in glue-intensive or resin-heavy panel environments, lowering consumable costs over time.
• The 10x28mm parallel shank with driving flat and length adjusting screw allows secure, repeatable mounting in boring machine chucks and adapters, making depth consistency achievable across large panel batches without repeated manual adjustment.

Specifications

• Manufacturer Part Number: 376.080.11
• Brand: CMT Orange Tools
• Diameter: 5/16"
• Cutting Height: 12mm
• Total Length: 57.5mm
• Shank: 10x28mm
• Number of Cutting Edges: 2 (Z2)
• Number of Spurs: 2 (V2)
• Number of Spiral Flutes: 2
• Rotation: Right-Hand (RH)
• Blade Material: HW (Tungsten Carbide)
• Spiral Coating: P.T.F.E. (orange or black)

Approved Applications

• Drilling and countersinking in a single pass on boring machines
• Bolt head and connector recess formation in panel assemblies
• Cabinet and furniture panel boring on multi-spindle CNC boring machines
• CNC boring center and panel processing center operations
• Boring in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels