Metric Class 8.8 Nylon Insert Locknuts Clear Zinc Cr3 Plating

Metric Class 8.8 Nylon Insert Locknuts – Reliable Locking with Clear Zinc Cr3 Protection

When secure fastening and vibration resistance are critical in metric applications, Metric Class 8.8 nylon insert locknuts with Clear Zinc Cr3 plating offer an ideal combination of strength, durability, and corrosion protection. Manufactured from medium-carbon steel and heat-treated to meet Class 8.8 mechanical requirements, these locknuts are well suited for demanding mechanical assemblies where consistent performance is required.

Strong, Vibration-Resistant Locking Action

The key feature of these locknuts is the integrated nylon insert located at the top of the nut. As the nut is installed, the nylon collar deforms around the bolt threads, creating prevailing torque that resists loosening from vibration, shock loads, or thermal cycling. This mechanical locking action eliminates the need for adhesives or secondary locking devices and allows for clean installation and limited reusability.

Clear Zinc Cr3 Plating Advantages

Finished with Clear Zinc Cr3 (trivalent chromium) plating, these nylon insert locknuts gain effective protection against rust and oxidation while maintaining a clean, professional silver appearance. Unlike older hexavalent chromium coatings, Cr3 plating is RoHS-compliant, making it a safer and more environmentally responsible choice. The finish performs well in indoor and moderately exposed environments, such as manufacturing facilities, machinery enclosures, and light infrastructure.

Ideal Applications

Metric Class 8.8 nylon insert locknuts are widely used in automotive components, industrial equipment, machinery assemblies, HVAC systems, and general construction projects where metric fasteners are standard and vibration resistance is essential.

Specifications and Features

• Material: Medium-carbon steel, Class 8.8

• Type: Nylon insert locknut (prevailing torque)

• Finish: Clear zinc Cr3, RoHS-compliant

• Thread Types: Metric coarse and fine

• Sizes: Typically M5 through M30

• Standards: DIN 985, ISO 10511, EN 24032

A Dependable Metric Locking Solution

For applications requiring secure fastening, corrosion resistance, and modern compliance, Metric Class 8.8 nylon insert locknuts with Clear Zinc Cr3 plating deliver dependable performance and excellent value. Need help selecting the right size? Our fastener experts are ready to assist.