Kennametal 4039608 Indexable Shim Sm Neutral 7mm

Product Description

The KENNAMETAL 4039608 is an SM-style shim designed for use with indexable P-Clamping cutting units. It provides a precise seating surface for indexable inserts, maintaining correct cutting geometry and tool height repeatability during machining operations. The shim measures 0.3524 inches thick and is sized for a 7 mm (0.2756 inches) inscribed circle, making it a direct-fit component for compatible toolholders. Neutral cut orientation suits straight turning and boring applications. Machinists and toolroom technicians install this shim as part of indexable toolholder maintenance or initial assembly.

This shim is intended for use in indexable P-Clamping cutting unit toolholders that accept rectangular insert shapes with a 7 mm inscribed circle. It is suited for both production turning and general-purpose metal cutting applications where consistent insert positioning is critical. The SM shim style seats flush within the toolholder pocket, supporting accurate insert clamping across repeated insert changes. This component is typically used in CNC turning centers and manual lathes in metalworking environments.

Key Features

• SM shim style for P-Clamping indexable cutting units
• 0.3524 inches thickness for precise insert height positioning
• 7 mm (0.2756 inches) inscribed circle sizing for rectangular insert compatibility
• Neutral cut orientation supports straight turning and boring operations
• Maintains consistent insert seating across repeated index changes

Compatibility

Designed as an OEM-style replacement shim for P-Clamping indexable cutting unit toolholders accepting rectangular inserts with a 7 mm inscribed circle and SM shim style seating.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians during indexable toolholder assembly or insert change procedures. Ensure the toolholder is removed from the machine spindle and all cutting forces are relieved before accessing the shim pocket. Clean the seating pocket thoroughly before placing the shim to prevent interference with insert geometry. Follow the toolholder manufacturer's clamping torque and procedure specifications when reassembling the cutting unit.