Seco 00077782 Threading Insert 1.25mm Iso Solid Carbide

Product Description

The SECO 00077782 is a laydown threading insert designed for external ISO thread cutting on CNC lathes and turning centers. Part of the Snap Tap series, it is manufactured from micrograin solid carbide with a CP500 grade designation and a PVD-applied TiAlN/TiN coating for extended wear resistance. The insert features a 60-degree included angle and a 1.25mm pitch, making it suited for right-hand external ISO thread profiles. At 0.1366 inches thick with a 3/8-inch inscribed circle, it seats into standard 16ER-style toolholders. Machinists and CNC operators in production and job-shop environments install this insert for threading operations on stainless steel and similar work materials.

This insert is engineered primarily for stainless steel workpieces (material code M) where PVD-coated micrograin carbide provides the combination of edge sharpness and heat resistance needed for consistent thread quality. The A2 chipbreaker geometry assists with chip control during threading passes. The right-hand orientation suits standard external threading operations in typical turning setups. It is sold individually per package with a minimum order quantity of two pieces, making it appropriate for shops that rotate inserts regularly as part of a planned tooling maintenance program.

Key Features

• Micrograin solid carbide substrate with CP500 grade designation for wear resistance in stainless steel applications
• PVD-applied TiAlN/TiN coating for thermal protection and extended edge life
• 1.25mm ISO pitch with 60-degree included angle for standard external ISO thread profiles
• A2 chipbreaker geometry assists chip control during threading passes
• Right-hand cut orientation for conventional external threading setups
• 3/8-inch inscribed circle fits standard 16ER-style toolholders

Compatibility

Designed as a direct-fit replacement for 16ER-style laydown threading insert seats used in standard external ISO threading toolholders and boring bars configured for right-hand operation.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator with the machine in a locked-out, zero-energy state before insert indexing or replacement. Use the correct torque wrench and insert screw specified by the toolholder manufacturer to secure the insert — avoid over-tightening, which can fracture carbide. Verify insert seating and toolholder cleanliness before resuming cuts. Follow applicable shop safety procedures and manufacturer tooling guidelines when setting cutting parameters.