Vargus 51358 Threading Insert 14 Tpi Stub Acme Carbide

Product Description

The VARGUS 51358 is a solid carbide laydown threading insert designed for right-hand external Stub Acme thread cutting at 14 threads per inch (TPI). Manufactured in the 3ER insert style, it features a 29-degree included angle and a TiN (titanium nitride) coating applied via PVD process, which improves surface hardness and wear resistance during threading operations. The insert measures 9.53 mm (3/8 inch) inscribed circle and 3.60 mm thick, with a single tooth per side. It is installed in compatible laydown threading toolholders and used by machinists and CNC lathe operators for precision thread forms on external workpiece profiles.

This insert is suited for external Stub Acme threading applications in precision machining environments, including production shops and job shops running CNC or manual lathes. Stub Acme threads are commonly found in power transmission components, lead screws, and linear actuators. At 14 TPI, this insert is appropriate for medium-pitch thread work where a shorter thread depth than a full Acme form is specified. The right-hand cutting orientation and laydown seating style make it a direct fit for standard 3ER toolholder pockets.

Key Features

• Solid carbide construction for rigidity and wear resistance in threading operations
• TiN coating via PVD process for extended tool life and reduced friction
• 14 TPI Stub Acme thread form with 29-degree included angle
• Right-hand external cutting orientation
• 3ER insert style with 9.53 mm inscribed circle for laydown toolholder compatibility
• Single tooth per side for precise thread profile control

Compatibility

Designed as a laydown threading insert for use in 3ER-style external threading toolholders that accept inserts with a 9.53 mm inscribed circle. Confirm toolholder pocket geometry and seating style before installation.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before indexing or replacing the insert. Use the correct torque wrench and insert screw specified by the toolholder manufacturer when securing the insert in the pocket. Inspect the pocket seat and clamping screw for wear or damage before seating a new insert.