Dormer 5977921 | 20.64mm Diameter x 6.35mm OAL Bright Coated HSS F310 Round Adjustable Die

Adjustable circular split die, for ISO-Metric Fine thread M3 with 0.35mm 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 13/16" outside diameter and 1/4" 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.