Conquest 2-1/2"-4 Grade C NU Heavy Nylon Insert Locknut – Plain

The Conquest 2-1/2"-4 Grade C NU Heavy Nylon Insert Locknut is a high-strength, large-format fastener built for structural stability in high-vibration, heavy-load environments. Featuring a coarse 4 TPI thread and a heavy-pattern design, this nut provides strong thread engagement, while the nylon insert delivers vibration-resistant locking without damaging the mating threads or requiring extra components like washers or adhesives.

Heavy-Pattern Locknut for Framing, Baseplates, and Indoor Equipment Installations

Manufactured from hardened Grade C carbon steel and finished plain, this locknut is ideal for dry indoor applications where corrosion isn’t a concern. The oversized profile enhances load distribution, making it suitable for securing columns, anchoring large HVAC structures, or assembling indoor equipment platforms. The nylon insert friction-locks onto mating threads, minimizing the risk of loosening in critical connections over time.

Key Features

• Nylon Insert: Provides locking power by increasing resistance to thread rotation.
• Heavy-Pattern Strength: Built from Grade C steel for durability and torque tolerance.
• Thread Type/TPI: Coarse 4 TPI for quick engagement and secure hold in heavy-duty connections.
• Plain Finish: Designed for non-corrosive, indoor structural environments.
• Oversized Fastening: Made for 2-1/2"-4 threaded bolts and rod.

Applications

• Structural equipment platforms and baseplates
• Indoor HVAC systems and mechanical supports
• Industrial bracketing and framing systems
• Heavy-duty enclosures and machinery retrofits
• Any vibration-prone application requiring a secure hold

Installation Tips

• Start threading by hand to preserve the nylon insert.
• Use torque tools rated for oversized fasteners to secure properly.
• Ensure mating bolt threads are clean and match 4 TPI pitch.

Related Items:

• A307 Hex Bolts
• A307 Threaded Rod