4" Inch (100 mm) Fly Cutter with HSS Bit Tool – R8 Shank (7/16 UNF Drawbar)

• Ultra-Wide 4" (100 mm) Cutting Diameter: The largest cutter in the lineup, designed to surface wide workpieces in a single, seamless pass for efficient machining.
• Precision R8 Shank: Engineered for a high-accuracy fit in Bridgeport and other R8-compatible milling machines, ensuring stable spindle mounting.
• 7/16" UNF Drawbar Thread: Tapped to industry-standard specifications to provide a rigid and vibration-free connection during milling operations.
• Premium HSS Tool Bit Included: Supplied with a high-grade High-Speed Steel cutting bit, hardened and ground for immediate precision machining.
• Mirror-Like Surface Finishes: The single-point cutting geometry eliminates transition marks, producing a flatter and smoother finish than traditional multi-flute face mills.
• Heavy-Duty Tool Steel Body: Manufactured from industrial-grade tool steel, providing the mass and rigidity required to handle the high surface speeds of a 4-inch cutter.
• Precision Squaring & Truing: Ideal for flattening blocks, truing plates, and creating perfectly level surfaces in workshop machining operations.
• Versatile Material Range: Performs effectively on aluminum, steel, brass, machinable plastics, and even wood.
• Cost-Effective Facing: Provides professional industrial surfacing results at a fraction of the cost of large indexable face mill systems.
• Reduced Runout Design: The precision-ground R8 shank helps maintain minimal runout, keeping the cutter perfectly flat across the 100 mm cutting path.
• Workshop Essential: A must-have tool for machinists who require wide surface coverage and high-quality “beauty pass” finishing.
• Complete Assembly: Includes the 4" (100 mm) fly cutter head, R8 shank, and a high-performance HSS cutting bit, ready for immediate use.