Techniks 11116 ER16 Hex Collet Locknut

Product Description

The TECHNIKS 11116 is an ER16 hex collet locknut designed to secure ER16 collets in compatible tool holders during machining operations. The hex profile allows for positive tightening with a standard spanner or locknut wrench, ensuring consistent clamping force and accurate tool runout. This locknut does not support coolant-through configurations. It is a direct replacement component intended for machinists and tooling technicians maintaining or rebuilding ER16 collet chuck assemblies in CNC and manual machining environments.

This locknut is suited for use in production machine shops, tool rooms, and maintenance environments where ER16 collet holders are in regular service. It is commonly installed when an existing locknut shows wear, thread damage, or inconsistent clamping performance. The ER16 collet series is widely used in milling, drilling, and light turning applications across both CNC machining centers and manual mills.

Key Features

• Hex profile for positive tightening with a spanner or locknut wrench
• Compatible with ER16 collet series tool holders
• No coolant-through passage - suited for dry or flood coolant setups without through-spindle coolant
• Lightweight at 0.1 pounds - minimal added mass to tool assembly
• Direct OEM-style replacement for worn or damaged ER16 locknuts

Compatibility

Designed as an OEM-style replacement locknut for ER16 collet series tool holders.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Power down and de-energize the spindle completely before servicing any collet chuck assembly. Use the correct ER16 spanner wrench to achieve proper clamping torque - do not use improvised tools that may damage the hex profile or thread. Inspect collet and holder threads for wear or contamination before installing the replacement locknut.