Pre-Applied Thread Locking Solutions for Reliable Fastener Performance
Forest City Technologies applies pre-applied thread locking coatings designed to help protect threaded assemblies from vibration loosening, loss of preload, leakage, and inconsistent liquid application in high-volume production environments.
Threaded fasteners are often exposed to vibration, shock, thermal cycling, fluids, and dynamic loading. When a fastener loses clamp load or begins to loosen, the result can be leaks, noise, rework, warranty concerns, or assembly failure. Pre-applied thread locking coatings help solve this challenge by placing a controlled locking material directly on the fastener before assembly.
Once the fastener is installed, the coating activates through thread engagement, fills the gaps between mating threads, and cures to help secure and seal the assembly. This gives OEMs and production teams a cleaner, more repeatable alternative to applying liquid threadlocker at the point of assembly.
Forest City Technologies helps customers match the right thread locking coating to the fastener, substrate, finish, assembly process, torque requirement, service environment, and OEM specification. The result is a more controlled fastening solution that supports repeatable assembly, reliable locking performance, and reduced risk of loosening in demanding applications.
Key Benefits of Pre-Applied Thread Locking Solutions
- Vibration resistance: Helps prevent loosening caused by vibration, shock, and dynamic loading.
- Pre-applied consistency: Reduces variation compared with manual liquid adhesive application.
- Ready for assembly: Dry-to-the-touch coatings allow fasteners to be handled, packaged, shipped, and installed more efficiently.
- Locking and sealing performance: Many products help both secure the fastener and seal thread gaps after cure.
- High-volume production fit: Supports automated and repeatable assembly workflows.
- Specification support: Product families include options aligned with major automotive, industrial, and OEM performance requirements.
Production Comparison
| Product | Strength / Positioning | Final Cure | Best-Fit Use Case |
|---|---|---|---|
| Precote 30 | Medium-strength controlled friction locking and sealing | 24 hours | General OEM locking applications requiring a solvent-free, tack-free pre-applied coating. |
| Precote 80 | High-strength locking, including elevated temperature needs | 24 hours | Demanding automotive, aerospace, heavy equipment, and e-mobility assemblies. |
| Precote 85 | High-strength controlled friction locking | 24 hours | Applications needing high locking performance with controlled friction characteristics. |
| LOCTITE DRI 201 | High-strength pre-applied threadlocker | 72 hours | High-volume assemblies where threaded parts must be ready for immediate use. |
| LOCTITE DRI 202 | Medium-strength general-purpose threadlocker | 72 hours | Fasteners requiring vibration resistance without permanent locking performance. |
| LOCTITE DRI 203 | Low-strength pre-applied threadlocker | 72 hours | Lower-strength locking applications where serviceability is important. |
| LOCTITE DRI 204 | High-strength threadlocker for plated and stainless fasteners | 72 hours | High-volume applications involving plated or stainless-steel fasteners. |
| LOCTITE DRI 2045 | Medium- to high-strength pre-applied threadlocker | 72 hours | Automotive and production environments needing ready-to-install fasteners. |
| LOCTITE DRI 205 | High-strength locking with low assembly torque positioning | 72 hours | Plated fasteners requiring consistent breakaway torque and vibration resistance. |
| LOCTITE DRI 2250-W | Medium- to high-strength threadlocker with heat aging capability | 72 hours | Automotive specification-driven applications requiring hot strength and solvent resistance. |
| LOCTITE DRI STS | Thread locking and straight thread sealing | 72 hours | Threaded fasteners and fittings where sealing, lubricity, and vibration resistance are needed. |
How Thread Locking Works
Pre-applied thread locking coatings are applied to the fastener before assembly and remain dry to the touch until use. During installation, pressure and shear forces from the mating threads activate the coating. The material fills the thread gaps and cures to help lock the fastener in place while also supporting sealing performance in many applications.
Applications and Industries
- Automotive and transportation: Transmission nuts, head bolts, axle bolts, tower bolts, ring gear bolts, pipe plugs, fittings, and vibration-sensitive assemblies.
- Heavy equipment: High-load threaded joints exposed to shock, vibration, and harsh operating conditions.
- Electronics and appliances: Small fasteners requiring consistent locking performance in repeatable assembly processes.
- Electric motors and e-mobility: Fasteners exposed to vibration, thermal cycling, and performance-critical operating conditions.
- Industrial manufacturing: Production environments where dry-to-touch, ready-to-install fasteners improve efficiency and reduce process variation.
