Carmex Internal UN Threadmill Insert 14mm / 18 TPI / 14 I 18 UN MT7

Mill-Thread Insert – UN 18 TPI, Internal

The Carmex 14 I 18 UN MT7 is a high-precision internal thread milling insert for Unified (UN) threads with 18 TPI. Designed for CNC helical interpolation, it produces clean, accurate, and repeatable thread profiles with excellent surface finish.

Constructed from MT7 fine-grain carbide, the insert offers superior hardness, wear resistance, and thermal stability for extended tool life. The size 14 profile provides exceptional rigidity and cutting stability, reducing vibration and improving dimensional accuracy.

Compatible with Carmex SR Series toolholders (single, twin, or multi-insert), it ensures robust support and efficient chip evacuation for demanding internal UN thread applications.

Key Features & Benefits

• Ordering Code: 14 I 18 UN MT7
• Thread Type: Internal Threading
• Thread Profile: UN – Unified 60°
• TPI: 18
• Insert Size: 14
• H (Height): 7.5 mm
• T (Thickness): 3.1 mm
• Carbide Grade: MT7
• Cutting Edge: Single
• Applications: Precision internal Unified threading for aerospace, mechanical, and general engineering
• Compatible Toolholders: SR Series (Single, Twin, Multi-Insert)

Carmex Precision Tools Ltd. is globally recognized for advanced threading technology—offering Thread Turning Inserts, Mill-Thread Inserts, Solid Carbide Threadmills, and SR Toolholders for dependable, high-accuracy performance.