BEST 9K Series Heavy Duty Cylindrical Lock, Dormitory (F90) Function

When you need simple, safe and dependable protection, there's no better choice than the 9K Series from BEST. The 9K is one of the toughest heavy-duty cylindrical locks on the market. Rose locking pin and rose assembly design offers great torque resistance. It prevents the locking pin from twisting, bending, or breaking under attack. The innovative design of the slotted key release cam and locking lug assembly create maximum attack resistance. Even though damaged, the lock still allows key access. In addition, the lever is fully functional from the inside. The hub-mounted torsion spring and strong retractor springs help prevent lever sag and offer a smooth and snappy operation. Strong through-bolt mounting studs increase torque resistance. Strong retractor springs provide resistance to lever sag. The outside lever sleeve is a seamless one piece construction made of a hardened steel alloy that provides additional reinforcement in the locking lug slot. Listed by UL for use on 3 Hr, A label for single or double swinging doors.