® CMT Vertical Milling Product Identification - Ordering Codes C10 C12 C18 C25 3 FLUTES 4 FLUTES C 18 I 12 UN MT7 CMT Line Cutting Diameter I = Internal Thread Pitch Thread ProfileA, D, G, N, Q =60˚ & 55˚Carbide Grade 10 = 10.0 mm Partial Profile ISO 12 = 12.0 mm18 = 17.8 mm25 = 25.0 mm C = Chamferingand GroovingCR = CornerRoundingUNWhitworthTrapezAcme F = Face Milling Chamfering and Finishing W = Grooving CuttingDDiameter CMT Spiral Multi Flute Inserts S 178 H 1.0 ISO MT8 Spiral CMT line Number Thread Pitch Carbide Multi flute of Flutes G, N =Partial Profile Grade Cutting Diameter D=4E=5F=6 H = Chamfering,Grooving and Boring Thread Profile 178 = Ø17.8 mm H=8 W = Grooving Partial 60° & 55° 189 = Ø18.9 mm200 = Ø20.0 mm R = Radius GrooveMilling ISO 350 = Ø35.0 mm CR = Corner Rounding UN B07-3