Grade A Nylon Insert Locknut Yellow Zinc Cr6 Plating

The Grade A nylon insert locknut with Yellow Zinc Cr6 plating is a trusted, go-to solution for secure, vibration-resistant fastening across a range of industrial and mechanical applications. Made from low carbon steel and fitted with a durable nylon insert, this locknut delivers reliable prevailing torque to prevent loosening under dynamic loads—ideal for use in automotive assemblies, HVAC systems, appliances, light machinery, and general fabrication.

The Grade A classification means this locknut offers solid holding power for medium-strength applications, and its nylon collar ensures it stays in place even under vibration or repetitive motion. The locking action is mechanical—not chemical or adhesive—so these nuts are reusable (to a limited extent) and easily installed with standard tools.

What makes this version stand out is its Yellow Zinc Cr6 plating, which offers enhanced corrosion resistance and a distinctive gold-tinted finish. The hexavalent chromium (Cr6) treatment adds a tough, protective layer, especially useful in environments prone to humidity, moisture, or wear. This coating also makes inspection easier thanks to its bright, high-visibility appearance.

Specifications & Features:

• Type: Nylon insert locknut (prevailing torque)

• Grade: A (low carbon steel)

• Finish: Yellow Zinc Cr6 (hexavalent chromium)

• Thread Types: Inch (UNC, UNF)

• Sizes: Common from 1/4"-20 to 1"-8

• Locking Mechanism: Embedded nylon ring

• Standard Compliance: ASME B18.16.6, SAE J995

For projects requiring moderate strength, corrosion protection, and reliable vibration resistance, the Grade A nylon insert locknut with Yellow Zinc Cr6 is a practical, cost-effective choice.

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