Iscar 4513001 ER16 Mini Clamping Collet Nut

Product Description

The ISCAR 4513001 is a mini clamping collet nut designed for use with ER16 collet series toolholders. The nut secures the collet within the toolholder body, maintaining precise clamping force and concentricity during machining operations. Its compact mini-style profile is suited for applications where clearance around the spindle nose is limited. Weighing 0.5 pounds, this replacement nut is a direct-fit component for ER16 tooling setups used in CNC machining centers, milling machines, and high-speed spindle applications.

This collet nut is intended for use in ER16-compatible toolholder systems found in production and job-shop machining environments. It is typically installed by machinists and tooling technicians performing collet replacement, routine maintenance, or toolholder rebuilds. The mini clamping style allows for reduced nose diameter clearance compared to standard ER nuts, making it a preferred choice in tight-clearance or high-speed spindle setups.

Key Features

• Designed for ER16 collet series toolholders
• Mini clamping nut profile for reduced clearance applications
• Direct replacement component for ER16 toolholder maintenance
• Compact and lightweight at 0.5 pounds
• Sold individually — one nut per package

Compatibility

Designed as an OEM-style replacement collet nut for ER16 series collet toolholders.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the spindle is fully stopped and the machine is powered down before removing or installing any toolholder components. Use the appropriate ER16 collet nut spanner wrench to tighten the nut to the toolholder manufacturer's specified torque — do not use improvised tools that could damage the nut or collet seating surfaces. Inspect the collet and toolholder bore for wear or debris before assembly.