E-z Lok BDC690618 Thread Locking Insert 3/4-10 Unc

Product Description

The E-Z LOK BDC690618 is a carbon steel thread locking insert designed to repair and restore damaged or worn threaded holes. It features a 3/4-10 UNC internal thread and a 1-8 UNC external thread, allowing it to be driven into an oversized or stripped bore to provide a fresh, reliable internal thread. At 0.781 inches in overall length, this insert is suited for applications where restoring full thread engagement strength is critical. The bright finish carbon steel construction provides solid mechanical performance in ferrous and non-ferrous base materials.

This insert is used in industrial maintenance, equipment repair, and general fabrication scenarios where a damaged threaded hole must be brought back to specification without replacing the entire component. The 3/4-10 UNC thread size targets medium-to-heavy fastening applications common in machinery, structural assemblies, and trade equipment. It is typically installed by maintenance mechanics, millwrights, and experienced technicians performing field or shop repairs.

Key Features

• Restores stripped or damaged 3/4-10 UNC internal threads
• 1-8 UNC external thread drives into the prepared host bore
• 0.781 inches overall length for adequate thread engagement depth
• Carbon steel construction for strength in demanding repair applications
• Bright finish with no coating interference on thread fit
• Sold in packages of 5 with a minimum order quantity of 1

Compatibility

Designed as an OEM-style thread repair insert for applications requiring a 3/4-10 UNC internal thread restored in a host bore tapped to accept a 1-8 UNC external thread.

Installation Notes

Installation requires tapping the damaged hole to the specified external thread size before driving the insert. Always de-energize or lock out any equipment before performing thread repair work on in-service machinery. Use the appropriate tap and installation driver recommended for this insert series to avoid cross-threading or insert damage. Follow applicable shop safety procedures and torque fasteners to specification after insert installation is complete.