E-z Lok 653-6 Thread Locking Insert M6 X 1 3/8-16 Ss

Product Description

The E-Z LOK 653-6 is a stainless steel thread locking insert designed to create strong, permanent internal threads in softer or damaged parent materials. It features an M6 x 1.00 internal thread and a 3/8-16 external thread, allowing it to be driven into a pre-tapped hole and lock in place without adhesives. The insert is 13/32 inches (0.406 inches) in overall length and is manufactured from grade 303 stainless steel with a bright finish. Standard wall construction provides reliable thread engagement in a compact footprint. Licensed HVAC, plumbing, and mechanical tradespeople use inserts like these when restoring stripped threads or installing metric thread interfaces in imperial-threaded assemblies.

This insert suits applications in both residential and light commercial mechanical systems where a metric internal thread is required within a standard-tapped hole. It follows metric coarse and metric fine thread standards and carries an internal thread class of fit of 2B and an external thread class of fit of 2A. A standard tap type is used for installation preparation. The 303 stainless steel construction makes it appropriate for corrosive or washdown environments found in plumbing and pool service applications.

Key Features

• M6 x 1.00 internal thread with 2B class of fit for precise thread engagement
• 3/8-16 external thread with 2A class of fit drives into standard pre-tapped holes
• Grade 303 stainless steel construction resists corrosion in wet or humid environments
• Standard wall design at 13/32 inches OAL minimizes material removal requirements
• Bright finish with no additional coating, ready for immediate installation
• Compatible with both metric coarse and metric fine thread standards

Compatibility

Designed for use in standard-tapped holes requiring a metric internal thread interface. Suitable for parent materials tapped with a standard tap type per the manufacturer specification.

Installation Notes

Installation is performed by a qualified mechanic or tradesperson using a standard tap to prepare the receiving hole before driving the insert. Power down or de-pressurize any system before accessing threaded fastener locations. Use the appropriate installation driver recommended for thread locking inserts to avoid damaging the insert or parent material. Follow all applicable fastener and mechanical assembly codes for the specific trade application.