Description
Mill-Thread Insert – UN 8 TPI, Internal
The 40 I 8 UN MT7 Mill-Thread Insert is specifically engineered for internal threading of Unified National (UN) profiles on CNC milling machines using helical interpolation. Designed to cut at 8 TPI, this insert delivers precise and reliable threading results for mechanical and industrial components using the Unified thread form. With a size 40 profile, 20 mm height, and 6.3 mm thickness, the insert ensures excellent cutting stability, clean thread geometry, and efficient chip evacuation in larger threading operations.
Manufactured from Carmex’s high-performance MT7 carbide grade, the insert provides outstanding wear resistance, consistent machining performance, and extended tool life in demanding environments. For maximum threading efficiency, this insert is compatible with Carmex’s comprehensive range of SR series toolholders—available in single, twin, and multi-insert formats, with options for carbide shanks and internal coolant supply. These holders are designed to match insert sizes and ensure secure clamping and high-performance machining.
Key Features:
- Ordering Code: 40 I 8 UN MT7
- Thread Type: Internal Threading
- Thread Profile: UN – Unified National
- Pitch (TPI): 8
- Insert Size: 40
- H (Height): 20 mm
- T (Thickness): 6.3 mm
- Carbide Grade: MT7
- Insert Type: Internal-use only
- Applications: Unified internal threads for industrial and heavy-duty mechanical assemblies
- Key Advantage: High-performance threading with SR series toolholder compatibility
Carmex Precision Tools Ltd. is globally recognized for its advanced threading solutions. The company offers a full range of Thread Turning inserts, Mill-Thread tools, Spiral Mill-Thread, Solid Carbide threadmills, and matching SR Series Toolholders—ensuring full compatibility and performance from toolholder to insert.
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