Metric Class 8.8 Keps External Tooth Hex Locknut Clear Zinc Cr3 Plating

The Metric Class 8.8 Keps external tooth hex locknut with clear zinc Cr3 plating combines strength, efficiency, and reliability into one smart fastening solution. Featuring an integrated external tooth lock washer, this all-in-one fastener is designed to save time on assembly while delivering exceptional vibration resistance in a wide range of mechanical and structural applications.

Made from high-strength Class 8.8 steel, these locknuts provide the tensile integrity needed for heavy-duty fastening, making them ideal for automotive assemblies, HVAC systems, appliance manufacturing, electrical enclosures, and general industrial equipment. The external teeth on the washer bite into the mating surface, creating a secure lock that resists loosening even under continuous movement or vibration.

The clear zinc Cr3 plating offers a durable, corrosion-resistant finish that protects the nut in moderate environmental conditions, such as indoor or semi-exposed outdoor applications. This trivalent chromium finish is also RoHS-compliant, making it a more environmentally friendly and worker-safe option compared to older hexavalent coatings. The smooth silver appearance adds a professional touch to any finished assembly.

Key Specifications:

• Type: Keps locknut (with integrated external tooth washer)

• Material: Hardened carbon steel – Class 8.8

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

• Locking Feature: One-piece locknut and washer

• Thread Type: Metric (coarse and fine threads)

• Sizes: Typically M3 to M12

• Applications: Light to medium-duty assemblies requiring vibration resistance

Whether you're streamlining production or seeking secure fastening for sensitive equipment, the Metric Class 8.8 Keps locknut with clear zinc plating delivers the strength and simplicity professionals count on.

Need help choosing the right metric size? Our team is ready with expert advice.