CMT Round Nose Bit - 5/8 in. Diameter, 5/16 in. Radius, 1/4 in. Shank is a precision carbide-tipped routing bit from CMT designed to carve smooth, semi-circular coves and graceful decorative grooves into wood and wood derivative surfaces. Whether you are adding fluted columns to furniture, cutting elegant veining into cabinet doors, or personalizing drawer fronts and panels with a signature decorative motif, this round nose (core box) bit delivers clean, consistent results across a wide range of materials. With a right-hand rotation, 2-flute design, and solid carbide material construction, it is equally at home in a handheld router, a router table setup, or a CNC routing machine.

Key Features

• 5/8 in. cutting diameter with a 5/16 in. radius - produces a precise, half-round cove profile that is ideal for fluting, veining, and decorative groove work on doors, drawer fronts, and panels.
• Carbide-tipped (HW) flutes - hard-wearing carbide edges stay sharp through extended use in solid hardwood, softwood, plywood, MDF, chipboard, laminates, melamine, and plastic, reducing the need for frequent bit changes.
• 2-flute cutting geometry with right-hand rotation - dual flutes work together to shear material cleanly and efficiently, producing smooth cove walls with minimal sanding or cleanup required.
• 1/4 in. shank diameter - fits a wide range of standard routers and collets, making this bit highly versatile for both jobsite handheld routers and dedicated router table setups.
• 3/8 in. cutting height - sufficient depth capacity to produce full decorative coves and grooves in a single or controlled multi-pass approach.
• 2 in. total length - compact overall length provides stability during routing operations and reduces vibration for a cleaner finished cut.

Why This Product

• If you need a reliable bit for adding decorative cove grooves or fluted accents to cabinet doors, drawer fronts, and furniture panels, the 5/16 in. radius profile creates the exact half-round shape required for classic and contemporary decorative routing work.
• The carbide-tipped construction means this bit handles not just solid hardwood and softwood, but also demanding engineered materials like MDF, chipboard, melamine, and plastic - making it a single-bit solution for mixed-material shop environments.
• The 1/4 in. shank makes this bit compatible with a broad selection of routers, from compact trim routers to full-size router tables and CNC machines, so it integrates into your existing tool setup without requiring adapter hardware.
• The 2-flute, right-hand rotation design is optimized to produce clean cove profiles with consistent depth and smooth surface finish - reducing post-routing finishing time on decorative workpieces where appearance matters most.

Specifications

• Manufacturer Part Number: 814.160.11
• Brand: CMT Orange Tools
• Diameter: 5/8 in.
• Radius: 5/16 in.
• Shank: 1/4 in.
• Cutting Height: 3/8 in.
• Total Length: 2 in.
• Number of Teeth: 2
• Rotation: Right-Hand (RH)
• Material: Carbide-Tipped (HW)
• Bit Type: Round Nose (Core Box)

Approved Applications

• Routing semi-circular coves in solid hardwood and softwood
• Decorative groove routing on doors and drawer fronts
• Fluting on furniture panels and architectural millwork
• Veining and surface accent work on wood and wood derivatives
• Decorative routing on plywood, MDF, chipboard, laminates, melamine, and plastic