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Grade A Nylon Insert Locknut Yellow Zinc Cr6 Plating

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Grade A Nylon Insert Locknuts – Proven Locking with Yellow Zinc Cr6 Protection

The Grade A nylon insert locknut with Yellow Zinc Cr6 plating is a reliable, cost-effective fastening solution designed to deliver vibration resistance and secure holding power in a wide range of industrial and mechanical applications. Manufactured from low carbon steel and equipped with a durable nylon insert, this locknut creates prevailing torque on the mating bolt to help prevent loosening caused by vibration, movement, or dynamic loads.

Reliable Performance for Everyday Applications

Grade A nylon insert locknuts are well suited for medium-strength fastening needs where consistent locking is required without excessive cost or complexity. The nylon collar provides a mechanical locking action—no adhesives or thread lockers needed—allowing for easy installation with standard tools and limited reusability. These locknuts are commonly used in automotive assemblies, HVAC systems, household appliances, light machinery, and general fabrication.

Yellow Zinc Cr6 Plating Advantages

What sets this locknut apart is its Yellow Zinc Cr6 (hexavalent chromium) plating. This finish delivers enhanced corrosion resistance and a distinctive gold-tinted appearance that improves visibility during installation and inspection. The Cr6 coating forms a tough protective barrier against rust, moisture, and surface wear, making it especially useful in humidity-prone or lightly exposed environments where additional protection is beneficial.

Specifications and Features

Type: Nylon insert locknut (prevailing torque)
Grade: A, low carbon steel
Finish: Yellow zinc Cr6 (hexavalent chromium)
Thread Types: UNC and UNF
Sizes: Commonly 1/4"-20 through 1"-8
Locking Mechanism: Embedded nylon ring
Standards: ASME B18.16.6, SAE J995

A Practical Locking Solution You Can Trust

When your project requires moderate strength, dependable vibration resistance, and added corrosion protection, the Grade A nylon insert locknut with Yellow Zinc Cr6 plating delivers consistent performance and value. Need help selecting the right size or thread? Our fastener experts are ready to help you get it right the first time.