Carmex 16ER48UNP25 Threading Insert 48 Tpi 3/8 in Ic

Product Description

The CARMEX 16ER48UNP25 is a solid carbide laydown threading insert designed for external UN thread cutting at 48 threads per inch (TPI). It carries a 3/8-inch inscribed circle (IC) and measures 0.146 inches thick. The insert features a PVD-applied titanium nitride (TiN) coating under the P25C manufacturer grade, classified as material grade C5. It is configured for right-hand external threading with a 29-degree included angle. This insert is installed by machinists and CNC operators in turning and threading operations on a wide range of workpiece materials.

The 16ER48UNP25 is suited for external UN thread production on lathes and CNC turning centers. The universal material grade designation covers a broad spectrum of workpiece materials including steel, cast iron, stainless steel, non-ferrous alloys, heat-resistant alloys, and general-purpose materials. It is appropriate for both production threading and job-shop applications where a single insert grade must handle varied material inputs. The 16-style insert seating geometry ensures positive indexing in compatible toolholders.

Key Features

• Solid carbide construction with PVD TiN coating for wear resistance across diverse workpiece materials
• 48 TPI external UN thread form with a 29-degree included angle
• 3/8-inch (0.3750 inch) inscribed circle for precise toolholder seating
• 0.146-inch insert thickness for rigid, stable cutting engagement
• Right-hand cutting configuration, 16ER insert style
• Meets CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use in toolholders accepting the 16ER laydown insert style. Compatible workpiece material codes include H, K, M, N, P, and S, covering the full range of common turning materials per ISO classification.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to secure the insert. Inspect the insert pocket for chips or debris before seating to ensure proper contact and prevent premature edge failure.