TNMA 160408 GT720 Wendeplatten - Tungaloy

Take advantage of GT720 cermet performance and the proven ISO TNMA geometry for consistent surface quality and dimensional stability; order directly via Metav Werkzeuge or consult our specialists for process-matched recommendations.

TNMA 160408 GT720 Turning Insert — Tungaloy triangular cermet insert for finishing

TNMA160408 GT720 is an ISO-format triangular indexable insert designed for external and internal turning operations where surface finish and dimensional control are prioritised

• ISO triangular insert TNMA160408
• Cermet grade GT720 for fine finishing
• 60° geometry with R0.8 corner radius
• Cylindrical hole, thickness 4.76 mm

Consistent surface quality and dimensional control for finishing

The GT720 grade is a cermet (coated cermet option) developed for finishing to light turning of steel, prioritising surface finish and dimensional accuracy. Its chemistry and coating balance wear resistance with edge integrity to deliver uniform wear over life, reducing the need for frequent index changes. For applications where component tolerance and appearance matter, this grade supports repeatable results and a predictable tool-change interval.

Stable geometry and simple holder compatibility

The triangular ISO shape with a 60° included angle and a corner radius of R0.8 gives a clear geometric advantage for contour work and shoulder turning, combining strength with the ability to achieve fine radii. The insert features a cylindrical hole and a nominal thickness of 4.76 mm, with a 0° clearance specification for specific holder arrangements. Compatibility with a holder or boring bar is determined by form, clearance angle, tolerance class, fastening method, size and thickness, so matching the insert to the appropriate external holder ensures stable cutting and reduced vibration.

Practical material and system guidance for workshop use

Made from carbide substrate and available as coated cermet, this insert is optimised for steel machining where a satin surface and accurate dimensions are required. The system build typically comprises the ISO insert, a matching external holder or boring bar, a seating pad or clamp kit and replacement screws. Note that this insert is supplied without a chipbreaker; the choice of chip control should be matched to workpiece material, cutting parameters and machine rigidity. For process planning, select a chipformer and grade aligned with component material and stability to maximise productivity and surface quality.

For finishing-critical turning applications, specify Tungaloy’s GT720 grade and get tailored recommendations from Metav Werkzeuge—contact info@metav-werkzeuge.com or call +49 2822 7131930 for technical matching and availability.

Technical data

• Article number: 6851529
• Manufacturer SKU: TUN6851529
• Label: TNMA160408 GT720 Tungaloy insert
• Model series: ISO turning inserts
• Application: Turning

Facts

• ISO code: 160408
• Size: 16
• Thickness: 4.76 mm
• Included angle: 60°
• Corner radius: 0.8 mm

Special features

• Material: carbide substrate
• Cutting material type: cermet / coated cermet
• Grade: GT720
• Shape: triangular
• Hole style: cylindrical hole
• Chipbreaker: none
• Clearance angle: 0°

FAQ

What materials is this insert suitable for?
The TNMA160408 GT720 insert is designed primarily for steel; the GT720 cermet grade focuses on finishing and light turning to achieve good surface quality and dimensional stability.

Does the insert include a chipbreaker?
The insert is supplied without a chipbreaker; chip control should be selected according to the workpiece material, machining strategy and machine stability.

How is compatibility with a holder determined?
Compatibility depends on the insert form, 0° clearance specification, tolerance class, fastening method, size and thickness; matching the ISO TNMA geometry to the correct external holder ensures safe clamping and cutting performance.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.