The key-locking thread insert is a special fastener with threads both inside and outside, and there are 4 or 2 pin keys on the external thread. The product is mainly used in military, aerospace, railway locomotives, vibrating machinery and other products that require high thread strength. The materials of the key-locking thread insert are carbon steel and stainless steel. From the external form of the product, there are distinctions between thin-wall and heavy-duty key-locking thread inserts. In addition, there are also strong type (Solid) and extra heavy-duty type. In terms of specifications, both metric and imperial sizes are available.

The most basic function of the key-locking thread insert is to repair the internal thread and enhance the external thread. As a thread repair method, the key-locking thread insert can quickly and effectively repair the damaged thread. When the key-locking thread insert is applied to materials at low temperatures, it can greatly enhance the strength of the threaded hole.

Key Features:

1. Engineered for high-strength internal thread applications with superior vibration/shock resistanceand pull-out prevention
2. Enhances thread hole integrity 30-50% beyondstandard stainless steel wire inserts(ASTM F468M/F593 compliance)
3. Available in carbon steel/stainless steel with dual metric/imperial specifications (ASME B18.6.7 COmpatible)
4. Simplified installation enables rapid thread repair & reinforcement in low-strength substrates(lSO898-1 validated)

Technical Advantages:

• 2X fatigue life improvement through controlledpreload distribution (FEA optimized)
• Dual-material selection meets MlL-S-8879C corrosion resistance requirements
• Interchangeable tooling system reduces installation time by 40% vs conventional methods