Seco 00049871 Threading Insert 19 Tpi Whitworth External

Product Description

The SECO 00049871 is a laydown threading insert designed for external Whitworth thread cutting at 19 threads per inch (TPI). Built from solid carbide with a micrograin grade and CP500 manufacturer designation, this insert features a TiAlN/TiN PVD coating that extends tool life across a wide range of workpiece materials. The 55-degree included angle matches the Whitworth thread form standard. With a 3/8 inch (0.3750 inch) inscribed circle and a thickness of 0.1366 inches, it fits toolholders designed for the 16ER insert style. This insert is installed by machinists and CNC lathe operators performing external threading operations on metal components.

This insert is suited for external threading applications on a broad range of materials, including ferrous metals, non-ferrous alloys, stainless steels, and high-temperature alloys, as indicated by its universal primary workpiece material classification with material codes K, M, N, P, and S. It belongs to the Snap Tap series and conforms to ISO standards. Typical use cases include production threading on CNC lathes and manual engine lathes where Whitworth thread forms are required. It is sold individually per package, with a minimum order quantity of 2 units.

Key Features

• Solid carbide micrograin construction for rigidity and wear resistance
• TiAlN/TiN PVD coating for extended tool life across multiple material types
• Right-hand cut, external thread orientation at 19 TPI Whitworth form
• 55-degree included angle conforming to Whitworth thread geometry
• 16ER insert style with 3/8 inch inscribed circle for standard toolholder compatibility
• ISO-compliant insert geometry in the Snap Tap series

Compatibility

Designed for use in 16ER-style insert threading toolholders configured for external right-hand thread cutting. Compatible with workpiece materials classified under K, M, N, P, and S material grades per ISO designation. Conforms to ISO insert standards for the 16ER insert size code.

Installation Notes

This insert is installed and indexed by machinists or toolroom technicians. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Follow the toolholder manufacturer's clamping specifications and verify insert seating before resuming cuts. Refer to applicable shop safety procedures and the toolholder documentation for proper torque and clamping method.