THREADING THREADING FEATURES OF MMT SERIES y A WIDE VARIETY OF CHOICES Mitsubishi Miracle Threading (MMT) series contains 297 inserts and 23 holders. M-CLASS INSERTS WITH 3-D CHIP BREAKERS G-CLASS GROUND INSERTS M UNC UNF W G Rp NPTF R Rd CSG LCSG Rc NPT M UNC UNF W G Rp R Rc Tr ACME BCSG G y IDEAL CHIP CONTROL EVEN IN THE LATTER HALF OF PASSES WHEN CONTINUOUS CHIPS ARE USUALLY PRODUCED. (M-CLASS INSERTS WITH 3-D CHIP BREAKERS) ISO metric external thread pitch 1.5 mm Final pass (6th pass) Competitor MMT Work Material : AISI 4140 Insert : MMT16ER150ISO-S Grade : VP15TF Cutting speed : 395 SFM Cutting method : Radial Infeed Depth of cut : Fixed cut area Pass : 6 times Coolant : Wet y A HIGHER LEVEL OF PRECISION THANCONVENTIONAL INSERTS (G-CLASS GROUND INSERTS) Thread Type Threading Tolerance ISO Metric 6g / 6H American UN 2A / 2B Theoreticalthread profile MMT series Whitworth for BSW, BSP Medium Class A BSPT Standard BSPT Round DIN 405 7h / 7H ISO Trapezoidal 30° 7e / 7H American ACME 3G UNJ 3A Conventional insert API Buttress Casing Standard API API Rounded Casing & Tubing Standard API RD High precision threading can be achieved by using MMT inserts that feature a ground rake face and peripheral cutting American NPT Standard NPT edge. American NPTF Class2 G010