Stainless Steel Key-Locking Thread InsertsA stainless steel key-locked thread insert is a specialized fastener featuring internal and externalthreads, with four or two drive pins (keys) on its external threads. After being installed into apre-tapped hole, the drive pins are inserted to secure the insert firmly, providing exceptionalfastening strength. This product is primarily used in military, aerospace, rail locomotives, vibratingmachinery, and other applications requiring high-strength threaded connections.

Advantages of Stainless Steel Key-Locked Thread Inserts:
1. Thread Repair: Effectively restores damaged threads to their original functionality.2. High-Strength Applications: ldeal for environments requiring robust internal threads,offering superior resistance to vibration, pull-out forces, and mechanical stress. Compared tostandard stainless steel wire thread inserts, key-locking inserts significantly enhance thestrength of threaded holes.
3. Material and Sizing Options: Available in both carbon steel and stainless steel variants, withspecifications covering metric and imperial standards.
4. Ease of Use: Simple installation process with minimal operational complexity.

Primary Material: 303 Stainless Steel (AISI equivalent)

Locking Components: 302 Cold-Rolled Stainless Steel

Compliance: Meets ASME B18.29.1 standards for helical coil inserts

Surface Finish: Electrochemical passivation per ASTM A967

Corrosion-Resistant Construction: Manufactured from 303 stainless steel bushings with 302 CRES locking components

Precision Engineering: Maintains ±.010" (±0.25mm) dimensional accuracy across all sizes

1.Drilling → 2.Tapping → 3.Screwing (installation) → 4.Pressing into the pin

Note: The drilling and tapping are exactly the same as the processing of ordinary internal threads, and it is better to use a special tool to improve the working efficiency when screwing and installing.