Baer Round Cutting Die in BSP, left-hand threading, sized at 1 3/8 in diameter and 11 TPI. This HSS die is built for general-use threading on cylindrical stock, delivering reliable, accurate BSP external threads with a straightforward setup.

• Material: High-Speed Steel (HSS) for toughness, wear resistance, and long cutting life.
• Thread standard: G (BSP) external threads in accordance with DIN ISO 228; left-hand version available for applications requiring reverse threading.
• Size and pitch: 1 3/8" diameter with 11 TPI, suitable for common BSP connections in plumbing and hydraulic work.
• Thread direction: Left-hand cutting to accommodate assemblies that use reverse threads.
• Design features: Four fixing holes and a V-groove to secure the die in die stocks or holders, plus compatibility with tailstock or drill-press setups.
• Standards and precision: Engineered to DIN 5158 specifications for round cutting dies, ensuring consistent performance across jobs.

Designed for dependable performance across materials commonly found in structural steels, copper and copper alloys, and other suitable metals, this Baer die enables clean, one-pass thread formation with minimal chip resistance. The precision-ground cutting edges deliver tight engagement with mating parts, reducing rework and improving repeatability. For optimal results, use with a compatible die stock or holder and apply appropriate cutting fluid to extend tool life and maintain thread quality. Ideal for general fabrication, plumbing fittings, hydraulic components, and any project requiring a robust left-hand BSP thread.