Grade A Nylon Insert Locknut Clear Zinc Cr3 Plating

The Grade A nylon insert locknut with Clear Zinc Cr3 plating is the perfect combination of reliable locking performance and corrosion protection. Designed for medium-strength applications, this locknut features a nylon collar at the top of the nut that grips the bolt threads upon installation, creating prevailing torque and helping to prevent loosening from vibration, movement, or thermal cycling.

These locknuts are ideal for a wide variety of applications including automotive assemblies, household appliances, HVAC systems, industrial equipment, electrical enclosures, and light structural framing. The Grade A classification means it’s made from low carbon steel, offering enough strength for general-purpose fastening, while still being easy to install and cost-effective.

The Clear Zinc Cr3 plating enhances the locknut’s appearance while providing moderate corrosion resistance in indoor and semi-exposed environments. This trivalent chromium (Cr3) finish is RoHS-compliant, making it a safer and more environmentally responsible choice than older hexavalent coatings. It offers a bright silver finish that resists rust and tarnishing—ideal for applications where both performance and appearance matter.

Specifications & Features:

• Type: Nylon insert locknut (prevailing torque)

• Grade: A (low carbon steel)

• Finish: Clear Zinc Cr3 (trivalent chromium, RoHS-compliant)

• Thread Types: UNC and UNF (inch sizes)

• Sizes: Typically available from 1/4"-20 to 1"-8

• Locking Feature: Embedded nylon collar

• Standards: ASME B18.16.6, SAE J995

Whether you're assembling panels, bolting components, or securing lightweight structures, the Grade A nylon insert locknut with Clear Zinc Cr3 plating provides a cost-effective, secure, and corrosion-resistant solution.

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