Jergens 215-066306 Keylocking Thread Insert 1/2-13 Stainless

Product Description

The JERGENS 215-066306 is a heavy-duty keylocking thread locking insert designed to provide a permanent, load-bearing threaded hole in parent materials that may be too soft, thin, or prone to thread stripping. It accepts a 1/2-13 UNC internal thread and is installed via a 3/4-16 external thread, with an overall length of 0.62 inches. Manufactured from 303 stainless steel with a passivated finish, this insert meets NAS 1394 standards. It is installed by licensed machinists, maintenance technicians, and tooling specialists in applications requiring reliable thread retention under heavy mechanical loads.

This insert is suited for use in aerospace, industrial, and precision manufacturing applications where standard threaded holes need to be reinforced or repaired. The keylocking design mechanically locks the insert into the parent material using driving keys, preventing rotation under dynamic or high-torque loading. Typical installation scenarios include fixture plates, tooling bodies, aluminum housings, and other metallic or composite structures requiring a durable UNC internal thread.

Key Features

• 1/2-13 UNC internal thread with Class 2B fit for standard fastener compatibility
• 3/4-16 external thread with Class 2A fit for precise installation into prepared bore
• Heavy-duty keylocking design mechanically prevents insert rotation under load
• 303 stainless steel construction with passivated finish for corrosion resistance
• Meets NAS 1394 standard for keylocking insert performance
• Overall length of 0.62 inches suits thin-wall and standard-depth applications

Compatibility

Designed as an OEM-style replacement or new-installation keylocking thread insert for parent materials prepared to accept a 3/4-16 external thread bore, in applications requiring a 1/2-13 UNC internal thread per NAS 1394.

Installation Notes

Installation is performed by machinists or qualified maintenance technicians using a keylocking insert installation tool to drive the locking keys flush with or below the parent material surface. The parent material bore must be tapped to 3/4-16 prior to insert installation. Ensure the workpiece is fully secured and de-energized or depressurized before beginning thread repair or insertion work. Do not exceed the thread engagement depth recommended for the parent material type.