Jergens 215-066524 Thread Locking Insert Unf Stainless Steel

Product Description

The JERGENS 215-066524 is a thin wall keylocking thread locking insert designed to provide a strong, permanent internal thread in parent materials that may be prone to thread stripping or damage. It features a 3/8 in-24 UNF internal thread and a 1/2 in-13 UNF external thread, with an overall length of 0.5 inches. Constructed from Grade 303 stainless steel with a passivated finish, this insert meets NAS 1394 standards and is suited for applications requiring corrosion resistance and secure thread retention under vibration or repeated fastener cycling. Installation is typically performed by machinists, maintenance technicians, and assembly professionals working in aerospace, industrial, or mechanical maintenance environments.

This insert is used in thin-wall parent material applications where standard helicoil or solid inserts may not be appropriate due to space constraints. The keylocking design locks the insert into the parent bore, preventing rotation under torque. It is appropriate for use in both ferrous and non-ferrous parent materials in light industrial and precision mechanical assemblies where UNF thread standards are required and corrosion resistance is a priority.

Key Features

• 3/8 in-24 UNF internal thread with Class 2B fit for standard fastener compatibility
• 1/2 in-13 UNF external thread with Class 2A fit for secure engagement in parent bore
• Thin wall keylocking design for use in space-constrained or thin-wall parent materials
• Grade 303 stainless steel construction with passivated finish for corrosion resistance
• Meets NAS 1394 standards for thread locking insert performance
• 0.5 inch overall length suits shallow boss and thin-panel installations

Compatibility

Designed as an OEM-style thread repair and thread locking insert for use in parent material bores tapped to 1/2 in-13 UNF specification, compatible with any application requiring a 3/8 in-24 UNF internal thread insert conforming to NAS 1394.

Installation Notes

Installation of keylocking thread inserts requires a properly tapped parent bore to the specified external thread size before insertion. Use the manufacturer-recommended installation tool to drive the locking keys into the parent material without damaging the internal thread. Ensure the parent material and insert are free of debris and cutting fluid before installation. Follow applicable facility or OEM torque and assembly procedures for the final fastener.