CMT 310.050.11 Dowel Drill 5 x 27 x 57.5mm RH by CMT is a precision two-flute carbide-tipped boring tool engineered for clean, accurate blind hole drilling in furniture manufacturing, cabinet making, and panel processing applications. Designed for right-hand rotation and featuring a PTFE-coated spiral, negatively ground spurs, and a hardened tungsten carbide (HW) head, this short-series dowel bit delivers flat-bottomed holes with minimal tearout across solid wood, chipboard, MDF, laminates, and coated panels - making it a reliable choice for high-volume boring operations on multi-spindle CNC and manual boring machines alike.

Key Features

• Tungsten carbide (HW) cutting head with 2 precision-ground cutting edges (Z2) - delivers long-lasting sharpness and consistent bore quality even in abrasive materials like MDF, chipboard, and coated panels, reducing downtime from tool changes.
• 2 negatively ground spurs (V2) - shear the material fibers cleanly at the perimeter of the hole before the main cutters engage, producing smooth bore walls and sharp entry edges with no splintering or tearout.
• PTFE-coated spiral flutes - the orange or black P.T.F.E. coating on the spiral portion resists pitch, resin, and adhesive buildup, keeping the flutes clear and maintaining efficient chip evacuation throughout extended production runs.
• Super-strength steel body - provides the structural rigidity needed to resist deflection and vibration during repeated blind hole drilling, supporting bore location accuracy across dense panel materials.
• Precision balanced centre point - registers accurately on the workpiece surface before the cutters engage, eliminating bit wander and ensuring on-target hole placement for tight-tolerance dowel joinery.
• Parallel shank with driving flat and length adjusting screw (10 x 27mm) - compatible with standard boring machine chucks and CNC tool holders; the driving flat prevents slippage under load and the adjusting screw allows precise depth setting.
• Right-hand (RH) rotation - matches the standard spindle direction of the vast majority of multi-spindle CNC boring centers and panel processing equipment, providing direct drop-in compatibility.
• Short-series total length of 57.5mm with 27mm cutting height - compact geometry reduces overhang and improves stability in tight spindle arrangements on multi-row boring heads.

Why This Product

• The combination of negatively ground spurs and a carbide (HW) cutting head makes this dowel drill well-suited to laminated and coated panel materials where surface tearout at hole entry is a common problem - both faces of the bore entry come out cleanly.
• The PTFE-coated spiral addresses a real production challenge: pitch and glue residue clogging the flutes of standard uncoated drills. This coating keeps the tool performing consistently across long runs without frequent cleaning stops.
• At 5mm diameter with a 10 x 27mm parallel shank and a driving flat, this bit is dimensioned for standard Euro-style boring machine spindles used throughout furniture and cabinet production - no adapters or special tooling required in most setups.
• The precision balanced centre point and 27mm cutting height work together to support repeatable blind hole depth consistency, which is critical when drilling for dowel connections where joint fit and alignment depend on matched hole depths across multiple panels.

Specifications

• Manufacturer Part Number: 310.050.11
• Diameter: 5mm
• Cutting Height: 27mm
• Total Length: 57.5mm
• Shank: 10 x 27mm
• Number of Flutes: 2
• Number of Spurs: 2
• Number of Cutting Edges: 2
• Rotation: Right-hand (RH)
• Blade Material: HW (Tungsten Carbide)
• Sharpening: Negatively ground spurs
• Spiral Coating: Orange or black P.T.F.E.
• Brand: CMT Orange Tools

Approved Applications

• Blind hole drilling for dowel connections and Euro-style joinery
• Panel drilling in furniture manufacturing and cabinet making
• Boring in solid hardwood and softwood
• Boring in chipboard, MDF, and HDF
• Boring in plywood, laminates, and coated panels
• Boring in plastics