Seco 00064748 Threading Insert 16NR8W CP500 Carbide 8 Tpi

Product Description

The SECO 00064748 is a laydown threading insert designed for right-hand internal Whitworth thread cutting on CNC lathes and threading equipment. Built from solid carbide in the CP500 grade, it carries a PVD-applied TiAlN and TiN multilayer coating that extends tool life in demanding threading operations. The insert is sized to an 8 threads-per-inch (TPI) pitch, with a 9.53 mm inscribed circle and a thickness of 3.47 mm (0.1366 inches). The 16NR insert style seats securely in compatible laydown-style toolholders. This insert is used by machinists and toolroom technicians producing internal Whitworth-threaded features in steel, alloy, and similar materials.

Typical applications include threading operations on manual and CNC lathes where internal Whitworth thread forms are required. The Whitworth thread standard is common in legacy British-specification equipment, plumbing, and hydraulic fittings. The CP500 carbide grade with TiAlN and TiN coating suits moderate to high cutting speeds and provides wear resistance in ferrous and alloyed workpiece materials. This insert is sold individually, with a minimum order quantity of 2 units per transaction.

Key Features

• Solid carbide CP500 grade for consistent threading performance in ferrous and alloyed materials
• PVD-applied TiAlN and TiN multilayer coating for extended wear resistance and reduced friction
• Right-hand internal Whitworth thread form at 8 TPI pitch
• 9.53 mm inscribed circle and 3.47 mm thickness for precise laydown-style toolholder seating
• Corner radius of 0.4200 decimal inch for controlled thread profile accuracy
• 16NR insert style for compatibility with standard laydown threading toolholders

Compatibility

Designed for use in laydown-style threading toolholders that accept the 16NR insert style. Suitable for producing internal Whitworth thread forms at 8 TPI on CNC and manual lathes.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine before seating or changing inserts. Ensure the insert pocket is clean and free of chips before seating the insert, and torque the clamping screw to the toolholder manufacturer's specification. Verify thread form and pitch with a calibrated thread gauge before committing to a production run.