EZ Loader 1/2"-13 Nylon Insert Locknut (Winch, Low Profile, Zinc) | 290-014432

EZ Loader 1/2"-13 Nylon Insert Locknut – Winch Application (Low Profile, Zinc) | 290-014432

This OEM EZ Loader 1/2"-13 nylon insert locknut is specifically used in trailer winch assemblies, where secure fastening and limited clearance are critical. Designed for use with Fulton winch systems and similar setups, this locknut provides vibration resistance without requiring a separate lock washer.

Designed for Winch Applications

Winch mounting areas often have limited space, repeated load during boat loading, and constant vibration during transport. This locknut features a low-profile hex design to fit tight clearance areas while maintaining proper thread engagement.

Nylon Insert (Nylock) Design

• Maintains tension on threads
• Resists loosening under vibration
• Eliminates the need for lock washers

👉 A more reliable solution than traditional nut + lock washer combinations.

Why Not Use Lock Washers

• Can fatigue or break
• Lose effectiveness under vibration
• Add unnecessary components

👉 This locknut replaces that system with a self-contained locking solution.

Zinc-Plated Steel Construction

• High-strength steel base
• Zinc coating provides sacrificial corrosion protection
• Consistent with OEM trailer hardware systems

Fitment & Specifications

• Thread Size: 1/2"-13 UNC (Coarse Thread)
• Type: Nylon Insert Locknut (Nylock)
• Profile: Low Profile (Winch Clearance Design)
• Finish: Zinc Plated
• Designed specifically for EZ Loader winch assemblies and matched to OEM hardware dimensions.

Commonly used on:

• Fulton winch assemblies
• Winch mounting brackets
• Trailer tongue winch setups

Important Installation Note

Nylon insert locknuts are designed for limited reuse.
👉 If the nylon insert no longer provides resistance, replace the nut.

Why This Part Matters

👉 Winch hardware is a high-load, high-use area.

• Ensures secure winch mounting
• Maintains consistent clamping force
• Reduces loosening under load

Real-World Insight

At 411-Trailers Group, winch assemblies are one of the most commonly serviced areas. Using the correct low-profile locknut prevents clearance issues and helps maintain reliable operation over time.