The CMT 521.002.11 90 deg. Solid Carbide Countersink with Parallel Shank is a precision-engineered boring tool designed to create clean, accurate 90 deg. countersunk blind holes that allow flat-head fasteners to sit perfectly flush with the workpiece surface. Built from solid carbide - a material harder than cobalt steel - this countersink delivers outstanding durability and cutting performance across a wide range of materials including solid wood, wood-based panels, non-ferrous metals, and metal. With a 19.5mm cutting diameter and a parallel shank compatible with most standard drill chucks, it is a versatile addition to any professional machining or woodworking setup.

Key Features

• Solid carbide (HWM) construction - harder than cobalt steel, this tool maintains its edge longer and performs reliably at higher cutting speeds, reducing downtime for tool changes.
• 3 precision-ground cutting edges - wear-resistant flutes produce a smooth, clean finish on even hardened materials, minimizing the need for secondary cleanup work.
• 90 deg. countersink geometry - engineered specifically to create flush-seating blind holes for flat-head fasteners, ensuring a professional, surface-level result every time.
• 19.5mm cutting diameter with 9mm cutting height - sized to accommodate a broad range of flat-head fastener applications without over-cutting the surrounding material.
• 10x48mm parallel shank - compatible with most standard drill chucks, making this tool easy to mount on drill presses, CNC routers, and router tables without special toolholders.
• 70mm total length - provides adequate clearance and reach for countersinking operations in typical workpiece setups.
• Right-hand (RH) rotation - matches the standard spindle direction of most drilling and routing equipment, ensuring straightforward installation and immediate use.
• Suitable for wood, wood-based materials, non-ferrous materials, and metal - a single tool that handles diverse material types, reducing the need for multiple specialized countersinks.

Why This Product

• When flush-mounted fasteners are a requirement, the 90 deg. geometry ensures flat-head screws seat completely level with the surface - ideal for cabinetry, metal fabrication, and precision panel work.
• Solid carbide construction outlasts high-speed steel and cobalt alternatives on hardened and abrasive materials, making this countersink a cost-effective long-term investment for high-volume or industrial applications.
• The parallel shank design removes the need for specialized toolholders - it fits directly into most drill chucks, keeping setup time low and compatibility high across different machines.
• With 3 wear-resistant precision-ground cutting edges, this tool delivers a smooth countersink finish that works cleanly across wood, MDF, chipboard, non-ferrous metals, and metal without switching tools.

Specifications

• Manufacturer Part Number: 521.002.11
• Brand: CMT Orange Tools
• Angle: 90 deg.
• Diameter: 19.5mm
• Cutting Height: 9mm
• Total Length: 70mm
• Shank: 10x48mm
• Number of Cutting Edges: 3
• Rotation: RH (Right-Hand)
• Material: HWM (Solid Carbide)

Approved Applications

• Drilling 90 deg. countersunk blind holes for flat-head fasteners
• Creating flush-mounted fastener seats in solid wood and softwood
• Countersinking in wood-based panels including chipboard and MDF
• Countersinking in non-ferrous materials and metal