This mortise cylinder hook bolt replacement kit is designed for Adams Rite style door locks, specifically compatible with the MS1850S-X5X series.

Crafted from durable materials, the Duronotic finish resists corrosion and wear, ensuring long-lasting performance in commercial or high-traffic environments. The 1-1/8 inch backset provides a precise fit for standard mortise lock installations. The assembly includes a cylinder, hook bolt, faceplate, and necessary mounting screws, along with two brass keys for convenient operation. Construction emphasizes robust metal components, with the bolt sliding smoothly to secure doors firmly. Suitable as a direct replacement for worn or damaged parts, this kit restores proper locking function without requiring complete lock replacement. The affordability of this solution makes it a practical choice for property managers, facility maintenance, or DIY enthusiasts seeking reliable door security. The design prioritizes durability and ease of installation, with standard dimensions that match many existing mortise lock cases. No special tools are needed beyond basic screwdrivers. The hook bolt mechanism provides additional security compared to standard latch bolts, making it ideal for exterior doors or areas requiring enhanced access control. The Duronotic finish offers a consistent, low-maintenance surface that blends well with most door hardware. The cylinder is compatible with standard Schlage C keyway, allowing integration into existing master key systems. The kit is manufactured to meet industry standards for strength and reliability, with each component tested for proper fit and function. While not a high-security solution, it provides dependable everyday performance for residential or light commercial applications. The price point reflects significant value compared to purchasing individual parts or an entire new lock set. This replacement option helps extend the life of existing door hardware, reducing waste and costs. The robust construction ensures the lock withstands repeated daily use without sticking or jamming. The included keys are cut to match the cylinder, providing immediate operability out of the package. The bolt extension is appropriately sized for standard door frames, engaging securely to prevent forced entry. This product is a straightforward upgrade or fix for those familiar with mortise lock maintenance.