® Spiral Mill - Thread Case Studies Case Studies Case Study no. 1 Thread M56x1.5 Internal/External Internal Thread Length 33.0 Raw Material Ductile Iron Cutting Speed – Vc 130 m/min Tooth Load – Fz 0.15 mm/tooth Toolholder SRH45 – 6 Insert H45 I 1.5 ISO MT7 Result 600 pcs with 0.02 offset (Competitor – 40 pcs with 0.15 offset) Case Study no. 2 Application Grooves Milling Internal/External External Raw Material Cast Steel Cutting Speed – Vc 195 m/min Tooth Load – Fz 0.10 mm/tooth Toolholder SRH63 – 9 Insert Taylor Made H63 Result 1350 pcs (Competitor – 540 pcs) B04-12