Tool-flo 9HXNS48 Clamp Screw Indexable Turning CL-20

Product Description

The TOOL-FLO 9HXNS48 is a replacement clamp screw designed for use with indexable turning toolholders. It secures the cutting insert within the clamp seat, maintaining precise insert positioning during turning operations. This hardware component is compatible with the CL-20 clamp style and is intended for use across a range of MCFNL, MCFNR, MCGNL, MCGNR, MCKNL, MCKNR, and MCLNL/MCLNR-style toolholders. Machinists and tooling technicians working with indexable insert turning setups install this screw as a direct replacement when the original hardware is worn, stripped, or lost. It ships as a single unit with a minimum order quantity of one.

This clamp screw is suited for indexable turning applications in both production and job-shop environments. It is used wherever CL-20-style clamping hardware is specified on compatible turning toolholders. The 9HXNS48 supports insert retention for CNMG and CNMM series inserts, including FM, MM, RM, and HR chipbreaker geometries. It is a stock replacement item for toolholders in multiple size configurations ranging from compact to heavy-duty turning setups.

Key Features

• Direct replacement clamp screw for CL-20 clamp-style indexable turning toolholders
• Compatible with CNMG 431, 432, and 433 series inserts in FM, MM, and RM geometries
• Compatible with CNMM 432 and 433 series inserts in HR geometry
• Fits a broad range of MCFNL, MCFNR, MCGNL, MCGNR, MCKNL, MCKNR, and MCLNL/MCLNR toolholder styles
• Sold individually, allowing single-unit replacement without overstocking hardware

Compatibility

Compatible toolholder styles include: MCFNL-164D, MCFNR-164D, MCGNL-164D, MCGNR-164D, MCKNL-124B, MCKNL-164D, MCKNL-204D, MCKNR-124B, MCKNR-164D, MCKNR-204D, MCLNL-104A, MCLNL-124B, MCLNL-164C, MCLNL-164D, MCLNL-204D, MCLNL-854D, MCLNR-104A, MCLNR-124B, MCLNR-164C, and MCLNR-164D. Compatible clamp: CL-20. Compatible inserts: CNMG 431-FM, CNMG 431-MM, CNMG 432-FM, CNMG 432-MM, CNMG 432-RM, CNMG 433-MM, CNMG 433-RM, CNMM 432-HR, CNMM 433-HR.

Installation Notes

Installation is performed by machinists or tooling technicians during insert indexing or toolholder maintenance. Before replacing the clamp screw, secure the machine and ensure the spindle is fully stopped and locked out per shop lockout/tagout procedures. Use the correct hex key or Torx driver as specified by the toolholder manufacturer for the clamp screw drive type. Do not overtighten; follow the torque guidance provided in the original toolholder documentation to avoid damaging the clamp seat or insert pocket.