The Baer Circular Die HSS is a precision tool for cutting external threads on cylindrical stock, designed for general-use and built to last. It’s ideal for machinists, workshops, and serious DIYers who need reliable left-hand metric threading (M39 x 4.0).

• Material: High-speed steel (HSS) circular die for durable, long-lasting cutting edges.
• Thread Size & Pitch: M39 x 4.0 metric coarse thread for robust, versatile fasteners.
• Orientation: Left-hand die built to cut left-hand threads; operate in the appropriate direction for accurate results.
• Cutting Edges: Precisely ground edges to ensure clean, accurate thread formation and smooth engagement with mating parts.
• Compatibility: Designed to work with a die stock or die holder for stable, controllable rotation during threading.
• Applications: Ideal for repairs, fabrication, and general external threading on cylindrical components in metalworking, automotive, and industrial settings.

This die delivers reliable, repeatable left-handed threading with sharp, durable edges that resist wear in routine workshop use. Its circular form makes it easy to guide and clamp in a standard die stock, helping you maintain alignment and produce precise threads that fit nuts, bolts, and other mating components. Use with appropriate cutting lubricant and follow standard left-hand threading procedures to achieve clean results every time.