Our knobs come unsprung. These are hollow and have loose roses to enable them to be used with a rim lock ( discard one rose) or use with a mortice lock.
They have 8mm threaded spindle to take adjustment for various door thickness and lock firmly with a grub screw. For best results the centre of the knob should be a minimum of 3 from the edge of the door.
Heavy Duty latches 4 or 5 are recommended for maximum efficiency. Supplied with necessary fixing screws.
The GRUB SCREW should locate on the V in the shaft and not on the threaded part.

• Knob Size: 50mm Dia.
• Projection: 64mm
• Rose Size: 51mm
• Spindle Size: 8mm (Threaded)
• Finish: Nickel
• Dimensions: Knob Size: 55mm