013-7021-00 - Bad Boy Mower Parts
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013-7021-00 – 5/8-11 Nylon Insert Locknut Zinc

Key Features of Bad Boy Mower 013-7021-00 – 5/8-11 Nylon Insert Locknut Zinc

  • OEM Replacement Hardware: Genuine Bad Boy nylon insert locknut designed for 5/8-11 thread applications.
  • Self-Locking Design: Nylon insert prevents loosening under vibration and high torque conditions.
  • High-Strength Steel Construction: Provides superior durability and consistent performance.
  • Zinc-Plated Finish: Protects against corrosion, rust, and environmental exposure.
  • Precision Threading: Ensures smooth engagement with bolts and consistent clamping force.
  • Vibration Resistant: Ideal for use in spindles, frames, and suspension assemblies.
  • OEM Quality Assurance: Meets Bad Boy’s factory specifications for strength and reliability.
  • See Models Used On below for more detail.

  • SKU:

    013-7021-00

$2.99
Usually ship in 1-3 days

Bad Boy Mower 013-7021-00 – 5/8-11 Nylon Insert Locknut Zinc

The Bad Boy Mower 013-7021-00 – 5/8-11 Nylon Insert Locknut Zinc is a genuine OEM fastener built for maximum holding power and vibration resistance in demanding mower applications. Featuring a nylon insert that grips the bolt threads securely, this locknut prevents loosening caused by vibration, movement, or torque during operation.

Constructed from premium-grade steel and coated with a durable zinc finish, the 013-7021-00 offers long-lasting corrosion protection and dependable strength under heavy load. The coarse 5/8-11 thread pitch ensures smooth engagement and consistent torque retention across multiple mower assemblies.

This OEM nylon insert locknut is commonly used in frame, spindle, wheel hub, and suspension mounting applications where secure, vibration-proof fastening is essential. The nylon insert provides a self-locking mechanism that maintains clamping force even after repeated use or exposure to outdoor elements.

Aftermarket hardware may not feature the same quality nylon or thread precision, leading to premature wear or loosening. The Bad Boy OEM 013-7021-00 Nylon Insert Locknut guarantees perfect fitment, high strength, and reliable performance—meeting Bad Boy’s strict standards for durability and safety.

At BadBoyMowerParts.com, we stock a full inventory of OEM nuts, bolts, washers, and fasteners engineered for Bad Boy Mowers. With free shipping on orders over $100, choosing genuine parts like the 013-7021-00 ensures your mower stays safe, secure, and performing at its best.

Models Used On

(Click Link For Diagram)

2026

2025

2024

2023

2022

2021

2020

2019

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