E-z Lok BDC690608 Thread Locking Insert 3/8-16 Unc

Product Description

The E-Z LOK BDC690608 is a carbon steel thread locking insert designed to restore or reinforce damaged internal threads in metal components. It features a 3/8-16 internal thread and a 9/16-12 external thread in the Unified National Coarse (UNC) standard, with an overall length of 0.515 inches. The bright finish carbon steel construction provides reliable holding strength in ferrous base materials. This insert is installed by a machinist or maintenance technician to bring a stripped or damaged threaded bore back to full load-bearing capacity without replacing the entire component.

This thread repair insert is suited for maintenance and repair applications across industrial, commercial, and trade environments. It is used when a tapped hole has been stripped, cross-threaded, or otherwise damaged and the parent material needs to be salvaged. Typical applications include equipment housings, machinery frames, structural brackets, and any ferrous assembly where a 3/8-16 threaded fastener must seat securely. The 9/16-12 external thread cuts into the parent material to anchor the insert, while the 3/8-16 internal thread accepts the original fastener size. Sold in a package of 10 units.

Key Features

• 3/8-16 internal thread accepts standard UNC fasteners after installation
• 9/16-12 external thread bites into parent material for a secure anchor
• Carbon steel construction provides strength suitable for ferrous base materials
• Compact 0.515-inch overall length fits shallow bore applications
• Bright finish - no coating residue to interfere with thread fit
• Thread repair type restores stripped or damaged tapped holes to original fastener size

Compatibility

Designed as an OEM-style thread repair solution for ferrous components with 3/8-16 internal thread requirements using the UNC thread standard.

Installation Notes

Installation is typically performed by a machinist or experienced maintenance technician. The damaged bore must be drilled out and tapped to the 9/16-12 external thread specification before the insert is driven or threaded into place. Power down and de-energize any equipment before beginning thread repair work on live assemblies. Follow the insert manufacturer's installation instructions and applicable shop safety procedures to ensure proper seating and thread engagement.