Schlage N523-221 Door Lock Spring Cage for ND Series Door Lock, Standard

Keep your doors operating smoothly and your facilities secure with the Schlage N523-221 Door Lock Spring Cage for ND Series door locks. This standard spring cage is an OEM replacement designed to restore consistent latch tension and reduce binding — a small part that prevents downtime and costly lock failures. Built for Schlage ND Series cylindrical locks, the N523-221 (Manufacturer Part Number N523-221) is manufactured to the brand's quality standards and shipped from MX for dependable supply.

Ideal for commercial properties, multi-tenant buildings and institutional sites, the spring cage delivers durable performance in high-traffic environments and helps extend the life of your cylindrical locks. Quick, tool-friendly installation makes it a practical choice for maintenance teams seeking fast service turnarounds and fewer repeat calls. By maintaining reliable locking action, this component also supports broader access control, security, surveillance and monitoring programs.

Replace worn spring cages proactively to preserve lock function and reduce interference with electronic monitoring. Add the Schlage N523-221 spring cage to your maintenance stock or order now to keep your access control and security systems running smoothly.

• Restores consistent latch tension for smoother door operation and fewer service callbacks
• OEM-fit for Schlage ND Series (Part N523-221) for fast, reliable replacement
• Durable design reduces wear and extends lock life in high-traffic commercial settings
• Simple swap-in installation minimizes downtime for facilities and maintenance teams
• Supports access control, security and surveillance systems by keeping locks performing reliably