Dormer F300M20X2 5978751 adjustable threading die, M20 x 2.50 metric fine thread. Suitable for cutting external threads in cast iron, stainless steel, non-ferrous metals, and steel. Precision-ground for accurate thread form and long tool life.

Adjustable circular split die, for ISO-Metric thread M20 with 2.50 mm pitch, to reduce the torque when cutting by hand split dies can be adjusted in small increments up to a maximum of approximately 0.15mm, dimensions according to BS 1127:1950 standard with 2" outside diameter and 5/8" thickness, HSS with bright finish for threading in free machining and plain carbon steel, ferritic stainless steel and gray, malleable, ductile and compacted graphite cast-iron.