Carmex Internal Right Hand UN Unified Thread Turning Insert 16 mm / 11 TPI / 16 IR 11 UN P25C

Internal Thread Turning Insert – UN Full Profile 60°

The Carmex 16 IR 11 UN P25C is a precision internal thread turning insert designed for machining Unified (UN) 60° thread profiles with an 11 TPI pitch. It forms the complete thread geometry—crest, root, and flanks—in a single pass, ensuring exceptional dimensional accuracy, smooth surface finish, and consistent thread quality in internal threading applications.

Constructed from advanced P25C-grade carbide, the insert provides an excellent balance of toughness, heat resistance, and wear performance. It performs exceptionally well on steels and alloy steels, delivering smooth cutting action, reliable chip control, and long-lasting tool life, even under medium cutting speeds and production threading conditions.

Key Features:

• Ordering Code: 16 IR 11 UN P25C
• Thread Type: UN (Unified Thread Standard – 60°)
• Profile: Full Form
• Insert Type: Internal
• Hand: Right Hand
• L: 16 mm
• I.C.: 3/8"
• Pitch: 11 TPI
• X: 1.1 mm
• Y: 1.5 mm
• Carbide Grade: P25C
• Applications: Internal Thread Turning for Unified Thread Forms (UNC/UNF/UNEF)
• Key Advantage: High-precision full-profile UN threading insert offering excellent wear resistance and cutting stability on steels and alloy steels

Manufactured by Carmex Precision Tools Ltd.—a global leader in advanced threading technologies—this insert is part of a wide-ranging product line including Thread Turning Inserts, Mill Thread systems, and Solid Carbide Threadmills. Known for precision, durability, and performance, Carmex tools are trusted in demanding machining environments worldwide.