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Grade A, Reversible Hex Locknut, Zinc Cr+3 (Inch)
Grade A Reversible Hex Locknuts Zinc Cr+3 are medium-strength, all-metal prevailing torque nuts designed for secure and vibration-resistant fastening in general-purpose industrial and structural applications. Manufactured to ASTM A563 Grade A specifications, these locknuts feature a dual-chamfered, all-metal design that allows installation from either end—eliminating orientation issues and simplifying assembly. The Zinc Cr+3 (trivalent chrome) plating provides excellent corrosion resistance and a bright silver finish while offering an environmentally friendly alternative to traditional hexavalent coatings.
Engineered for versatility and reliability, Grade A Reversible Hex Locknuts with Zinc Cr+3 finish deliver consistent locking performance without the need for inserts or adhesives. Ideal for use in machinery, steel fabrication, and equipment assembly, these nuts maintain torque retention under vibration and temperature variation. The Cr+3 coating ensures long-lasting rust protection, smooth threading, and clean appearance, making them a cost-effective and dependable solution for medium-duty fastening applications.
