Jergens 215-065911 Keylocking Thread Insert 1-8 Unc

Product Description

The JERGENS 215-065911 is a heavy-duty keylocking thread locking insert designed to provide a permanent, load-bearing internal thread in parent materials that may be too soft or too thin to hold a standard thread reliably. The insert features a 1-8 UNC internal thread and a 1-3/8-12 external thread, with an overall length of 1.375 inches. Manufactured from C1215 carbon steel with a zinc phosphate coating for corrosion resistance, this insert meets NAS 1394 standards. Installation is performed by licensed maintenance technicians, industrial mechanics, or MRO professionals working on heavy equipment, tooling, or structural assemblies.

This keylocking insert is suited for applications requiring a durable threaded hole in metal assemblies where thread stripping is a concern. The heavy-duty design handles high-load fastening situations in industrial, aerospace, and defense manufacturing environments. It is installed into a pre-drilled and tapped hole in the parent material, after which keys are driven into place to lock the insert and prevent rotation under torque or vibration.

Key Features

• Heavy-duty keylocking design resists rotation under high torque and vibration loads
• 1-8 UNC internal thread with Class 2B fit for standard fastener compatibility
• 1-3/8-12 external thread with Class 2A fit for secure installation in parent material
• C1215 carbon steel construction with zinc phosphate coating for corrosion resistance
• Meets NAS 1394 standards for keylocking thread inserts
• 1.375-inch overall length suits deeper thread engagement requirements

Compatibility

Designed as a heavy-duty keylocking thread insert conforming to NAS 1394, suitable for installation into parent materials tapped to accept a 1-3/8-12 external thread for applications requiring a 1-8 UNC internal thread.

Installation Notes

Installation should be performed by qualified industrial mechanics or maintenance professionals using the appropriate keylocking insert installation tool. The parent material must be drilled and tapped to the correct external thread specification before insert installation. Power down or de-energize any associated equipment before beginning work. Keys must be driven flush or below the parent material surface after the insert is seated to prevent loosening.