UN-60° American Unified Threading Inserts

Precision-engineered for 60°American Unified (UN/UNC/UNF) external threads, ensuring accurate thread angle, pitch, and form tolerance to meet US industrial fastener standards.

Full-profile cutting geometry forms complete thread crests and roots in one pass, eliminating secondary operations and ensuring consistent thread quality.

Insert sizes: 11, 16, 22, 27 (IC: 6.35 / 9.525 / 12.7 / 15.875 mm)
Pitch range: 3–32 TPI, covering common UNC/UNF/UNS specifications
Right-hand (ER) and left-hand (EL) configurations for external thread turning on CNC lathes

DM215 (Stainless Steel Grade): Balanced toughness and wear resistance for stainless steel, alloy steel, and heat-resistant alloys.

DP220 (Steel/Cast Iron Grade): Optimized for carbon steel, structural steel, and cast iron, offering high stability in continuous cuts.

DK110 (Non-Ferrous Grade): Low-friction substrate for aluminum, copper, and other non-ferrous metals to prevent built-up edge (BUE).

Both uncoated and coated (TiN/TiAlN) options are available for enhanced surface finish and extended tool life.

Ultra-fine grain carbide substrate with balanced hardness and toughness, resisting chipping in both continuous and interrupted cuts.
Precision-ground cutting edges ensure consistent thread pitch accuracy and surface finish, meeting tight tolerance requirements for American standard threaded components.
Standard center mounting hole design fits most common external threading tool holders (SER/L, SEL/L) for CNC lathes and turn-mill centers.