Based on the design of Yale’s robust cylindrical locksets, the 6400LN Monolock continues the tradition of quality and dependability as a preassembled lock series designed to retrofit Yale Monolock as well as Corbin Russwin Unit Lock and Falcon® Retrofit Lock installations.

• UL-cUL: UL-cUL fire-rated up to 1-1/2 hours
• Mechanism: Heavy-gauge steel, zinc-plated, dichromated
• Backset: 2-3/4″
• Latchbolt: 1/2″ stainless steel throw
• Guardbolt: Deadlocks latchbolt when door is closed; standard on all locking functions
• Door Thickness: 1-3/4″ only
• Lead Shielding: Available to order
• Cylinders: Brass, 6-pin, keyed-random cylinder with two keys furnished standard, 7-pin available to order.
• Reversibility: Handing must be specified for all functions and designs
• Strikes: 1-1/4″ lip ANSI strike supplied; other lip lengths and strikes available to order; all reversible
• Finishes: Available in 626 finish only
• Warranty: 7-year mechanical