Seco 00074901 Threading Insert 4 Tpi Api V 0.050 CP500

Product Description

The SECO 00074901 is a laydown threading insert designed for external thread cutting operations in demanding machining environments. Manufactured from solid carbide with a micrograin substrate and PVD-applied TiAlN/TiN coating, it carries the CP500 grade designation. The insert is configured in the 27ER style with a 4 threads-per-inch (TPI) pitch and conforms to the API V 0.050 thread standard, making it suitable for oil and gas component threading. The inscribed circle measures 5/8 inches (0.6250 inches decimal) and thickness is 0.2421 inches. Right-hand cutting orientation. Installation is performed by machinists and toolroom technicians on CNC lathes and threading centers.

This insert is intended for external threading applications requiring conformance to API V 0.050 standards, commonly encountered in the production of pipe couplings, drill collars, and related oilfield tubular components. The universal primary workpiece material classification covers a broad range of material grades including cast iron, stainless steel, non-ferrous materials, steel, and heat-resistant superalloys, as indicated by material codes K, M, N, P, and S. It is part of the SECO Snap Tap series and meets ISO standards for insert geometry and dimensional consistency.

Key Features

• Solid carbide micrograin substrate for wear resistance at sustained cutting speeds
• PVD TiAlN/TiN coating provides thermal protection and surface hardness
• API V 0.050 thread standard compliance for oilfield tubular applications
• 27ER insert style with 60-degree included angle for standard thread form geometry
• 0.0250-inch corner radius for consistent thread root profile
• Right-hand external orientation; compatible with standard laydown toolholders in the 27 series

Compatibility

Designed for use in laydown threading toolholders accepting 27ER-style inserts. Suitable for external threading operations requiring the API V 0.050 thread form at 4 TPI. Compatible workpiece materials span multiple material grades per ISO classification codes K, M, N, P, and S.

Installation Notes

Installation and indexing should be performed by a qualified machinist or toolroom technician with the machine powered down and spindle locked. Seat the insert fully in the toolholder pocket and torque the clamping screw per the toolholder manufacturer specifications. Inspect the seating surface for chips or debris before clamping, as contamination can affect thread form accuracy. Follow all applicable shop safety procedures when handling carbide inserts, as edges are sharp and the material is brittle under impact.