Kennametal 1159625 SEKN1204AFSNGN KC725M Milling Insert

Product Description

The KENNAMETAL 1159625 is a solid carbide milling insert in the SEKN series, designated by ISO code SEKN1204AFSNGN. It carries a multilayer PVD coating of TiN, TiCN, and TiN applied over a solid carbide substrate in manufacturer grade KC725M. The insert is square in shape with a 90-degree included angle, a neutral hand orientation, and a GN chip breaker geometry. At 0.1875 inches thick with a 0.5 inch inscribed circle and a 1.00 mm (0.0394 inch) corner radius, it is sized for standard indexable milling toolholders that accept the SEKN 43 insert size. Holding is by screw clamp. Licensed HVAC techs and machinists in metalworking and tool-and-die environments install and index these inserts during routine cutting-edge replacement.

This insert is engineered for milling operations on steel, stainless steel, superalloys, and titanium — ISO material groups P, M, and S. The KC725M grade and PVD multilayer coating are matched to applications where controlled heat and edge toughness matter, such as face milling, shoulder milling, and general-purpose milling passes on difficult-to-machine alloys. The neutral rake angle of 0 degrees and 20-degree relief angle make it suitable for a range of cut conditions from light finishing to moderate roughing on the listed workpiece materials. It is sold in a minimum order quantity of 5 units, with each package containing 1 insert.

Key Features

• PVD multilayer coating: TiN outer, TiCN mid, TiN base — improves wear resistance and edge stability on steel and superalloys
• Solid carbide substrate in KC725M grade rated for material groups C5, C6, and C7
• GN chip breaker geometry for effective chip control across P, M, and S workpiece materials
• Square insert shape with 90-degree included angle and neutral hand — compatible with standard SEKN screw-clamp toolholders
• 1.00 mm corner radius balances surface finish quality with edge strength
• 0-degree rake angle and 20-degree relief angle support versatile milling applications

Compatibility

Designed as an OEM-style replacement or direct-use indexable insert for SEKN-series screw-clamp milling toolholders accepting insert size code 43 with a 0.5 inch inscribed circle. Compatible workpiece materials include steel, stainless steel, superalloys, and titanium per ISO codes P, M, and S.

Installation Notes

Indexable milling inserts are installed and replaced by machinists or toolroom technicians using the appropriate Torx or hex key for the clamping screw specified by the toolholder manufacturer. Always de-energize and lock out the machine spindle before handling inserts. Inspect the insert pocket seat and clamp screw for damage or debris before seating a new insert. Do not overtighten the clamping screw beyond the toolholder manufacturer specification.