Sumitomo 1A4W996 Indexable Drill Insert WDXT073506M ACM300

Product Description

The SUMITOMO 1A4W996 is a carbide indexable drill insert in the WDXT style, designed for use with WDX-series indexable drills. It carries the ACM300 manufacturer grade and features a dual-layer PVD coating of TiAlN and AlCrN, delivering heat resistance and extended tool life in demanding drilling operations. The insert has an 80-degree rhombic (diamond) shape with a positive rake angle and an 11-degree relief angle, promoting efficient chip evacuation and reduced cutting forces. With a corner radius of 0.6 mm and a thickness of 3.5 mm, this insert is suited for precision hole-making in ferrous and non-ferrous materials. Licensed machinists and CNC tooling technicians are the primary installers.

This insert is used in production drilling applications where consistent hole quality and tool life are priorities. The WDXT073506M designation identifies the insert style, size code (073506), and M chipbreaker geometry. The M chipbreaker is engineered for medium-duty cutting conditions. Typical applications include machining operations on CNC machining centers and drill presses in job shop, aerospace, and general manufacturing environments. This insert fits the WDX series indexable drill body that accepts WDXT-style inserts in the 073506 size.

Key Features

• ACM300 carbide grade with PVD-applied TiAlN and AlCrN dual-layer coating for heat and wear resistance
• 80-degree rhombic (diamond) insert shape with positive rake for lower cutting forces
• 11-degree relief angle supports clean hole entry and exit
• M chipbreaker geometry optimized for medium-duty drilling conditions
• Two cutting edges per insert for extended service life per unit
• Corner radius of 0.6 mm for controlled edge strength and surface finish

Compatibility

Designed for use with SUMITOMO WDX-series indexable drill bodies that accept WDXT-style inserts in the 073506 insert size. Verify the drill body insert pocket specification before installation.

Installation Notes

Insert indexing and replacement should be performed by qualified CNC tooling or machining technicians with the spindle powered down and the machine in a locked-out, tagged-out state per applicable safety procedures. Use the correct torque wrench and insert screw driver specified by the drill body manufacturer to seat the insert properly — do not overtighten by hand estimation. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert. Confirm insert orientation matches the drill body pocket geometry before resuming operation.