Carmex Internal UN Threadmill Insert 21mm/ 10 TPIMill Thread Insert UN 10 TPI, Internal The 21 I 10 UN MT7 Mill Thread Insert is engineered for internal threading of Unified National (UN) profiles on CNC milling machines using helical interpolation. Designed for a 10 TPI thread pitch, this insert delivers consistent and accurate threading for mechanical and general purpose applications. With a size 21 insert body, 12 mm height, and 4. 7 mm thickness, it ensures strong cutting performance and clean,

7/16"-14X1

DIN 6537K

✔ Solid Carbide Construction – Provides exceptional durability

Manufactured from wear-resistant BMA-grade carbide

this 9mm/ 0

Accurate Hole Finishing – Ensures precise sizing and excellent surface finish in pre-drilled holes

and prevents material build-up on the cutting edges

making it perfect for use in challenging conditions

Interior: 300x220x100

Durable & Strong: The stainless steel inserts restore damaged threads and provide long-term protection against stripping

0mm Cutting Diameter – Ideal for structural components and precision boring

Size: 46mm / 1