Jergens 215-065905 Thread Locking Insert 7/16-14 Unc

Product Description

The JERGENS 215-065905 is a heavy-duty keylocking thread locking insert designed to create a permanent, load-bearing threaded connection in parent materials that cannot support standard fastener loads on their own. The insert accepts a 7/16-14 UNC internal thread and installs via a 5/8-11 UNC external thread, with an overall length of 0.620 inches. Finished in zinc phosphate for corrosion resistance, this carbon steel insert conforms to NAS 1394 standards and meets material grade C1215. It is installed by machinists, maintenance technicians, and MRO professionals working on threaded repair and reinforcement applications.

This insert is suited for applications where a smaller internal thread must be anchored into a larger tapped hole, including thread repair in worn or stripped bores and original equipment installations requiring high pull-out resistance. The heavy-duty keylocking design provides superior resistance to rotation and axial displacement compared to standard coil-type inserts, making it appropriate for high-vibration and high-load environments in industrial and mechanical assemblies.

Key Features

• Heavy-duty keylocking design resists rotation and axial pullout under high load and vibration
• 7/16-14 UNC internal thread with Class 2B fit for standard fastener compatibility
• 5/8-11 UNC external thread with Class 2A fit for precise installation into parent bore
• Carbon steel construction at material grade C1215 for strength and machinability
• Zinc phosphate coating provides corrosion resistance and improved surface adhesion
• Conforms to NAS 1394 standard for thread locking insert performance

Compatibility

Designed as a direct-installation heavy-duty keylocking thread insert for UNC-threaded applications requiring a 5/8-11 external installation thread and a 7/16-14 internal thread, conforming to NAS 1394.

Installation Notes

Installation is performed by machinists or qualified maintenance technicians using the appropriate keylocking insert installation tool for the 5/8-11 external thread size. The parent material must be properly tapped to the correct minor diameter before insert installation. Ensure the workpiece is securely fixtured and de-energized or de-pressurized as applicable to the assembly before beginning work. Keys must be driven in after insert installation to lock it against rotation per standard keylocking insert procedure.