Create precise external threads on cylindrical workpieces with the Baer Circular Die in metric coarse size M39 x 4.0. Built for general use, this HSS die delivers reliable, repeatable threading for shop projects and professional machining.

• Thread size: M39 x 4.0, metric coarse, right-hand thread for general-purpose external threading
• Material: High-speed steel (HSS) for durability and wear resistance in metalworking environments
• Shape: Circular die designed to form external threads on cylindrical stock with controlled cutting
• Compatibility: Designed to be used with a die stock or die holder for smooth, steady rotation
• Cutting edges: Precision-ground teeth to produce clean, accurate thread engagement and repeatable results
• Applications: Ideal for general-purpose threading tasks, prototype work, and routine maintenance on mechanical assemblies
• Brand: Baer Circular Die, a trusted choice for consistent threading performance

This tool helps you quickly create or repair external threads on shafts, bolts, and fittings with confidence. The combination of metric coarse pitch and right-hand threading covers a wide range of standard applications, while the durable HSS construction stands up to regular use in workshop environments. Pair it with a compatible die stock to achieve smooth, even thread formation and dependable results across projects—from everyday repairs to longer-term mechanical builds.