Tool-flo 9HSM420 Indexable Shim Seat Grooving Threading

Product Description

The TOOL-FLO 9HSM420 is an SM-series shim seat designed for indexable grooving and threading toolholders. This replacement shim sits beneath the cutting insert in the toolholder pocket, providing a stable, repeatable seating surface that protects the holder body from insert wear and impact damage. Machined to a thickness of 0.189 inches, the 9HSM420 features a neutral rake geometry and is compatible with both left-hand and right-hand cutting directions. It accepts rectangular insert shapes and is intended for use by machinists and toolroom technicians working with indexable insert tooling in turning and grooving applications.

This shim seat is suited for production turning, grooving, and threading operations on CNC and manual lathes. It is used in applications where insert seats require replacement due to wear, damage, or insert size changes. The neutral rake profile makes it appropriate for a broad range of workpiece materials and cutting conditions. The SM series designation aligns with specific TOOL-FLO FLSR and FLSL toolholder families used in external grooving and threading operations.

Key Features

• SM shim style with neutral rake for broad material compatibility
• 0.189 inch thickness provides precise, repeatable insert seating
• Compatible with both left-hand and right-hand cutting directions
• Fits rectangular insert shapes in FLSR and FLSL toolholder bodies
• Direct replacement shim seat to protect toolholder pocket from wear
• UNSPSC Code 27112800 for procurement system compatibility

Compatibility

Confirmed compatible with the following TOOL-FLO complete toolholder models: FLSL-164D, FLSL-204D, FLSR-164D, and FLSR-204D. Also referenced under catalog number SM-420.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine before removing or installing any toolholder components. Ensure the shim seat pocket is clean and free of chips or debris before seating the shim, as surface contamination can affect insert height and cutting geometry. Follow the toolholder manufacturer torque specifications for the clamp screw when securing the insert over the shim.