Conquest 2-1/4″-4-1/2 Grade C NU Heavy Nylon Insert Locknut – Plain
The Conquest 2-1/4″-4-1/2 Grade C NU Heavy Nylon Insert Locknut is a large-diameter, heavy-pattern fastener engineered for structural and mechanical assemblies exposed to frequent vibration or movement. With its coarse 4-1/2 TPI thread and built-in nylon insert, this nut provides a secure locking grip that maintains thread engagement without the need for washers or chemical locking agents.
Oversized Nylon Locknut for Indoor Equipment, Framing, and Structural Systems
Made from hardened Grade C steel and finished plain, this locknut is suited for dry, indoor environments where corrosion resistance is not a primary concern. Its heavy-pattern build increases surface contact, delivering greater clamping force in high-load installations. This nut is ideal for HVAC supports, mechanical baseplates, heavy-frame assemblies, and other vibration-prone structures. The nylon insert ensures long-term resistance to loosening, helping extend the service life of the assembly and reduce maintenance needs.
Key Features
- Built-In Nylon Insert: Locks threads securely under vibration and shifting loads.
- Heavy-Pattern Strength: Grade C carbon steel provides rugged performance and torque stability.
- Thread Type/TPI: Coarse 4-1/2 TPI thread for fast engagement and strong grip.
- Plain Finish: Designed for non-corrosive, indoor applications.
- Oversized Compatibility: Pairs with 2-1/4″-4-1/2 threaded rod or bolts.
Applications
- Machinery assembly and indoor maintenance operations
- HVAC framing and large duct supports
- Baseplate and frame anchoring in structural builds
- Light industrial and mechanical equipment installation
- General-purpose indoor bolting where vibration is a factor
Installation Tips
- Hand-thread to start, ensuring nylon insert aligns properly with bolt threads.
- Use calibrated torque tools suitable for heavy-pattern fasteners.
- Match thread pitch (4-1/2 TPI) to ensure full engagement and locking action.
Related Items:
- A307 Hex Bolts
- A307 Threaded Rod
