Sandvik Coromant 5782017 Threading Insert 10 Tpi Un

Product Description

The SANDVIK COROMANT 5782017 is a solid carbide laydown threading insert designed for right-hand internal UN thread cutting at 10 threads per inch (TPI). Part of the CoroThread 266 series, it features a TiCrAlN/TiAlN PVD coating that promotes wear resistance and tool life in demanding threading operations. The insert carries a 3/8-inch inscribed circle, measures 5/32 inch thick (0.1563 inch), and is ground to a 60-degree included angle with a single tooth per side. It is used by machinists and CNC operators in production and job-shop environments where precise internal threading is required.

This insert is suited for internal UN threading applications on CNC lathes and turning centers in both production and job-shop settings. The CoroThread 266 style targets consistent thread form and dimensional accuracy on through-holes and blind-hole bores. The right-hand cutting geometry and 10 TPI specification make it appropriate for standard fastener-thread applications in steel, alloy, and similar workpiece materials where PVD-coated carbide tooling is the standard specification.

Key Features

• Solid carbide substrate with TiCrAlN/TiAlN PVD coating for extended tool life
• Right-hand internal UN thread geometry, 10 TPI, 60-degree included angle
• CoroThread 266 series insert style (Insert Size Code 16)
• 3/8-inch (9.53 mm) inscribed circle; 5/32-inch (3.97 mm) thickness
• Chipbreaker style A for controlled chip evacuation in internal threading
• Manufacturer grade 1125 optimized for PVD-coated carbide threading performance

Compatibility

Designed for use with CoroThread 266 series toolholders and boring bar systems that accept the 266 laydown insert style with a 16 size code. No additional specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or removing the insert. Use the correct torx or hex key as specified by the toolholder manufacturer to achieve proper clamping force without stripping the seating pocket. Inspect the insert pocket for chips or debris before installation to ensure accurate insert seating and thread-form repeatability.