Schlage XB11-922 2.5 Conversion Kit B600 Series Deadbolt

Product Description

The SCHLAGE XB11-922 2.5 Screw and Tailpiece Conversion Kit adapts B600 Series deadbolts for installation on doors measuring 2.5 inches thick. Standard deadbolt hardware is sized for typical door thicknesses, and when a door exceeds that dimension, the tailpiece and mounting screws are too short to allow proper cylinder engagement and secure fastening. This kit supplies the correct-length screws and a matching tailpiece to restore full mechanical function on oversized doors. It is a steel-construction replacement part intended for installation by locksmiths, door hardware technicians, or experienced commercial contractors working with non-standard door assemblies.

This conversion kit is intended for commercial and institutional door applications where door slab thickness exceeds the standard range supported by stock B600 Series hardware. It is particularly relevant in heavy-duty commercial entryways, solid-core wood doors, or multi-layer security door assemblies where total door thickness reaches 2.5 inches. Locksmiths performing retrofits or service calls on existing B600 Series installations will find this kit necessary when the original hardware configuration is incompatible with the door being serviced.

Key Features

• Configured specifically for 2.5-inch thick doors where standard B600 hardware will not reach
• Includes extended-length mounting screws and a correctly sized tailpiece in one kit
• Steel construction for durability in commercial door applications
• Through-door mounting design consistent with B600 Series deadbolt installation
• Direct OEM replacement part - no modification required

Compatibility

Compatible with the following B600 Series deadbolt models: B660BD, B660GD, B660HD, B663BD, B663GD, and B663HD FN.

Installation Notes

Installation should be performed by a licensed locksmith or qualified door hardware technician familiar with commercial deadbolt service. Before beginning, ensure the door is fully closed and secured, and that no load is being placed on the existing hardware. Remove the existing cylinder and hardware completely before swapping the tailpiece and screws. Verify that the new tailpiece engages the lock mechanism correctly and that mounting screws are fully seated and snug before testing function.