Casson Hardware carries a refined selection of mortise lock bodies, tubular passage latches, privacy bolts, and keyed locking mechanisms designed to anchor complete architectural door hardware assemblies. Suitable for residential and light commercial interiors, these components support passage, privacy, and keyed entry functions with precision-engineered performance. Correct specification is critical — backset dimensions, hub and spindle sizing (including 8 mm and 6 mm configurations), faceplate profile, finish, and door thickness must all be coordinated. Trade pricing and specification support available across Canada with shipping to the US.
Last reviewed: April 2026.
Frequently asked questions
What is a latching or locking mechanism?
The latching or locking mechanism is the engineered lock body, latch, or bolt that operates inside the door — driven by the lever, knob, thumbturn, or key on the surface. It includes mortise lock cases, tubular passage latches, privacy bolts, and keyed entry mechanisms.
What components must be coordinated for proper specification?
Backset dimensions, hub and spindle sizing (including 8mm and 6mm configurations), faceplate profile (rounded or square), finish, and door thickness must all be coordinated with compatible lever sets, thumb turns, and cylinders to ensure proper fit and smooth operation.
What hub and spindle sizes are common?
European mortise systems typically use 8mm hub and spindle, while many North American and Italian systems use 6mm. Casson Hardware lists the exact hub and spindle size on every lock body product page so the matching lever or knob trim can be specified correctly.
What is the difference between an 8mm and 6mm spindle?
The 8mm and 6mm refer to the cross-section of the spindle that connects the lever or knob trim to the lock body. They are not interchangeable — selecting the right spindle is essential for correct fit.
Are these products suitable for residential and light commercial use?
Yes. Casson Hardware sources latching and locking mechanisms specified for residential and light commercial interiors, with precision-engineered performance for passage, privacy, and keyed entry functions.
Does Casson Hardware offer specification support?
Yes. Casson Hardware's specification team supports trade clients in coordinating the correct lock body, lever set, faceplate, and cylinder for project-specific door assemblies through the Trade Program.
Where can I buy door latching and locking mechanisms in Canada?
Casson Hardware is a Canadian supplier of architectural mortise locks, tubular latches, and locking mechanisms, available to order online at cassonhardware.com or specified through our project team.
