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The SECO 00045631 is a threading insert designed for use in external threading operations on CNC lathes and manual turning centers. This insert follows the 11NL profile geometry and is rated for 14 TPI (threads per inch) in the 14UN Unified National thread standard. The CP500 grade designation indicates a coated carbide substrate engineered for consistent thread form and wear resistance across a range of workpiece materials. Machinists and toolroom technicians use this insert as a replaceable cutting element seated in a compatible threadmill or external threading toolholder.
This threading insert is suited for external thread cutting on parts requiring 14 TPI Unified National thread forms. The 11NL geometry is standard for single-point external threading applications on turning equipment. It is typically used in production environments, job shops, and maintenance machining where precise thread profile control is required. The CP500 grade is appropriate for carbon steels, alloy steels, and similar materials commonly encountered in general metalworking.
Designed as an OEM-style replacement threading insert for compatible SECO external threading toolholders accepting the 11NL insert seat geometry.
Threading inserts of this type are installed and removed by qualified machinists or toolroom technicians. Power down and de-energize the machine spindle before seating or removing the insert. Use the appropriate torx or hex key as specified by the toolholder manufacturer to secure the clamping screw to proper seating without over-torquing. Inspect the insert pocket and clamping surfaces for chips or debris before installation to ensure proper seating and thread form accuracy.
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