Jergens 215-069302 Thread Locking Insert 1/4-20 Heavy-duty

Product Description

The JERGENS 215-069302 is a heavy-duty keylocking thread locking insert designed to create a permanent, load-bearing internal thread in metal assemblies. It features a 1/4-20 internal thread and a 7/16-14 external thread, with an overall length of 0.37 inches. Constructed from 303 stainless steel with a passivated finish, this insert resists corrosion and maintains thread integrity under high-stress conditions. It is installed by machinists, maintenance technicians, and industrial assemblers who need reliable thread repair or thread reinforcement in soft or worn parent materials.

This insert is suited for applications where standard threaded holes are subject to heavy loads, frequent fastener removal, or vibration. It is commonly used in manufacturing fixtures, machine tool components, and precision assemblies where thread stripping is a concern. The keylocking design drives keys into the parent material after installation, preventing rotation and pullout of the insert under load. Suitable for use in ferrous and non-ferrous base materials across industrial and production environments.

Key Features

• 1/4-20 internal thread accepts standard 1/4-20 fasteners
• 7/16-14 external thread for installation into a prepared tapped hole
• Overall length of 0.37 inches for use in thin-wall or shallow-boss applications
• 303 stainless steel construction with passivated finish for corrosion resistance
• Heavy-duty keylocking design mechanically locks insert against rotation and axial pullout
• Passivated surface treatment meets typical stainless finishing standards

Compatibility

Designed as an OEM-style keylocking thread insert for use in prepared 7/16-14 tapped holes in ferrous and non-ferrous parent materials requiring a 1/4-20 internal thread.

Installation Notes

Installation is performed by machinists or maintenance technicians using the appropriate keylocking insert installation tool. The parent material must be tapped to 7/16-14 before insert installation. After driving the insert flush, keys are staked into the parent material using a key-driving tool to lock the insert in place. De-energize or lock out any equipment before servicing threaded connections in operational machinery.