E-z Lok 550-8 Thread Locking Insert 1/2-13 X M16 X 2

Product Description

The E-Z LOK 550-8 is a standard wall thread locking insert designed to create a strong internal thread in materials that require a more durable mating surface. With a 1/2-13 UNC internal thread and an M16 x 2.00 external thread, this insert is installed into a pre-tapped host material to provide a reliable threaded interface that resists loosening under vibration and load. It measures 0.6693 inches overall length and is manufactured from C12L14 carbon steel with a smooth rolled finish. Machinists, maintenance technicians, and assembly professionals install this type of insert when original threads are stripped or when a cross-standard thread conversion is required.

This insert is suited for applications where a UNC or UNF internal thread standard must be maintained within a host material tapped to M16 x 2.00. Typical use cases include industrial machinery repair, fabrication fixtures, and equipment assemblies where thread integrity under sustained load is critical. The standard wall design fits host bores tapped with a standard tap, making it compatible with conventional shop tooling without special broaching or installation equipment.

Key Features

• 1/2-13 UNC internal thread with Class 2B fit for standard fastener engagement
• M16 x 2.00 external thread with Class 2A fit for secure installation in host material
• Standard wall construction fits standard-tapped host bores without special tooling
• C12L14 carbon steel construction provides high strength and machinability
• Smooth rolled finish on external thread for clean installation and thread locking performance
• 0.6693 inch overall length suits typical fastener depth requirements in medium-thickness materials

Compatibility

Designed for use in host materials tapped to M16 x 2.00 where a 1/2-13 UNC internal thread is required. Requires a standard tap for host bore preparation.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a standard installation tool compatible with thread locking inserts. The host material must be tapped to the correct M16 x 2.00 specification before insert installation. Ensure the host bore is clean and free of debris prior to driving the insert. Do not exceed the depth of the tapped hole, as bottoming out the insert can damage the host threads.