Seco 00049959 Threading Insert 8 Tpi Api Round CP500

Product Description

The SECO 00049959 is a laydown threading insert engineered for right hand external API Round thread cutting at 8 threads per inch (TPI). Built from solid carbide in the CP500 grade, it carries a PVD-applied TiAlN/TiN coating that extends tool life across a broad range of workpiece materials. The insert measures 9.53 mm inscribed circle (0.3752 inches) and 3.47 mm thick (0.1366 inches), fitting the 16ER insert style. The 60-degree included angle matches API Round thread form geometry. This insert is installed by machinists and CNC lathe operators in oil and gas, industrial, and pipe fabrication environments.

Designed for external threading on pipe and coupling profiles conforming to the API Round thread standard, the 00049959 suits turning centers and manual lathes equipped with 16ER toolholders. The CP500 grade with PVD coating handles universal workpiece materials, making it viable across cast iron, steel, stainless, non-ferrous, and high-temperature alloys. It is commonly used in shops producing oilfield tubular goods, couplings, and fittings where API Round thread form and pitch accuracy are required. Package quantity is 1 insert per unit; minimum order quantity is 2 units.

Key Features

• Solid carbide construction in SECO CP500 grade for consistent thread form accuracy
• PVD-applied TiAlN/TiN coating extends cutting edge life in demanding threading operations
• 8 TPI pitch ground to API Round thread standard with 60-degree included angle
• Right hand external thread orientation for standard pipe and coupling OD threading
• Universal primary workpiece material rating covers cast iron, steel, stainless, non-ferrous, and superalloys
• 16ER insert style with 9.53 mm inscribed circle for direct drop-in to compatible toolholders

Compatibility

Designed as a direct-fit replacement for 16ER-style external threading toolholders used in API Round thread applications. Conforms to ISO insert standards for the 16ER style. Consult toolholder documentation to confirm 16ER seat geometry before installation.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before seating or indexing the insert. Use the appropriate torx or hex key at the torque specified by the toolholder manufacturer for 16ER inserts. Inspect the insert seat and clamp for chips or wear before securing the new insert to ensure proper seating and thread form accuracy.