Mill-Thread Insert – NPT 8 TPI, External & Internal The 30-8 NPT MT7 Mill-Thread Insert is engineered for precision threading of National Pipe Taper (NPT) profiles on CNC milling machines using helical interpolation. Suitable for both external and internal conical threading, this insert produces accurate 8 TPI threads ideal for high-pressure fluid and gas sealing systems. With a 16 mm height and 5.5 mm thickness, this size 30 insert ensures excellent stability and thread integrity in heavy-duty operations. Made from Carmex’s advanced MT7 carbide grade, it delivers enhanced wear resistance, thermal stability, and long-lasting performance across both short and long production runs. Designed to cut tapered pipe threads in a single tool pass, the insert helps reduce machine downtime while improving productivity. It is fully compatible with Carmex’s comprehensive range of SR series toolholders offered in single, twin, and multi-insert configurations with options for internal coolant and carbide shanks. These holders provide reliable clamping and machining accuracy, making them the perfect match for high-precision pipe threading applications. Key Features: Ordering Code: 30-8 NPT MT7 Thread Type: External and Internal Threading Thread Profile: NPT – National Pipe Taper Pitch (TPI): 8 Insert Size: 30 H (Height): 16 mm T (Thickness): 5.5 mm Carbide Grade: MT7 Insert Type: Single-sided Applications: Tapered pipe threading for fluid/gas tight-seal systems Key Advantage: Durable multi-function threading insert with high performance on demanding threads Carmex Precision Tools Ltd. is a trusted name in high-precision cutting tools, specializing in threading solutions for turning and milling applications. Their portfolio includes Thread Turning inserts and holders, Mill-Thread inserts and toolholders, Spiral Mill-Thread, and Solid Carbide threadmills designed to meet the demands of modern industry with reliability and accuracy.
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