Carmex 16ER11.5NPTBXC Threading Insert 11.5 Tpi Npt

Product Description

The CARMEX 16ER11.5NPTBXC is a solid carbide laydown threading insert designed for cutting external NPT (National Pipe Taper) threads at 11.5 threads per inch (TPI). The insert features a TiN coating applied via PVD process, which improves surface hardness and wear resistance during threading operations. With a 30-degree included angle and a 3/8-inch inscribed circle (0.3750 inches), this insert seats securely in standard ER-style laydown toolholders. It is intended for right-hand external threading and is suitable for a wide range of workpiece materials, including steel, stainless, cast iron, non-ferrous, and high-temperature alloys.

This insert is used in CNC turning and threading applications where consistent, accurate NPT thread forms are required. NPT thread profiles at 11.5 TPI are commonly found on pipe fittings, fluid system components, and pneumatic connections across industrial, plumbing, and mechanical applications. Machinists and toolroom operators working on lathes or turning centers will find this insert appropriate for both production runs and maintenance threading work. The BXC grade designation reflects CARMEX's classification for the coating and substrate combination used in this insert.

Key Features

• Solid carbide substrate with PVD-applied TiN coating for extended tool life
• 11.5 TPI external NPT thread form, right-hand cut
• 30-degree included angle for accurate NPT profile geometry
• 3/8-inch inscribed circle (0.3750 inches) for ER-style laydown holders
• 0.146-inch insert thickness for consistent seating depth
• Universal workpiece material compatibility including steel, stainless, cast iron, non-ferrous, and superalloys
• Certified to CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards

Compatibility

Designed for use in ER-style laydown threading toolholders accepting size 16 inserts. Compatible with right-hand external NPT threading operations on CNC turning centers and manual lathes.

Installation Notes

This insert is installed and replaced by machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or removing the insert. Use the appropriate torx or clamping key specified by the toolholder manufacturer to achieve correct clamping torque. Verify insert seating and edge condition before resuming threading operations.