Carmex External/Internal NPT Threadmill Insert 40mm/ 11.5 TPI

SKU: 40-115NPTMT7

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Description

Mill-Thread Insert – NPT 11.5 TPI, External & Internal

The 40-11.5 NPT MT7 Mill-Thread Insert is designed for machining National Pipe Taper (NPT) threads using helical interpolation on CNC milling machines. Suitable for both external and internal conical pipe threads, this robust insert is ideal for larger-diameter components used in gas and fluid-tight sealing systems. With a 20 mm height and 6.3 mm thickness, the size 40 insert delivers excellent cutting stability, strength, and accuracy in demanding applications. Manufactured from Carmex’s high-performance MT7 carbide grade, it ensures outstanding wear resistance, thermal endurance, and reliable thread quality across extended production runs.

The insert is fully compatible with SR series toolholders, available in single, twin, and multi-insert configurations with internal coolant and carbide shank options. These holders enhance rigidity, improve repeatability, and optimize chip evacuation making them ideal for tight-tolerance threading applications where reliability and consistency are critical.

Key Features:

  • Ordering Code: 40-11.5 NPT MT7
  • Thread Type: External and Internal Threading
  • Thread Profile: NPT – National Pipe Taper
  • Pitch (TPI): 11.5
  • Insert Size: 40
  • H (Height): 20 mm
  • T (Thickness): 6.3 mm
  • Carbide Grade: MT7
  • Insert Type: Single-sided
  • Applications: Precision NPT pipe threading for gas and fluid pressure systems
  • Key Advantage: Heavy-duty insert with reliable performance and SR toolholder compatibility

Carmex Precision Tools Ltd. is a leading manufacturer of high-quality cutting tools. Carmex specializes in threading solutions for turning and milling, offering Thread Turning inserts, Mill-Thread systems, Spiral Mill-Thread, and Solid Carbide threadmills engineered to meet the demands of precision CNC machining.

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