Product Description

8K57EA6ASTK611 Best 8K Series Entrance or Office Heavy Duty Cylindrical Knob Locks with Tulip Style in Bright Bronze Finish

The Best 8K57EA6ASTK611 cylindrical locks offer quick, economical re-keying capabilities with the best original interchangeable core. Long lasting quality is evident in the design and composition of the Best 8K Series locks. The BEST 8K Series is constructed of steel or brass to ensure the overall strength and durability of the lock. The Best 8K series are listed by the BHMA for A156.2, Series 4000, Grade 1.

Entrance or Office Lock: Latch operated by rotating the inside knob, rotating the outside knob only when inside push button is out, Turning the key in the outside knob. Outside knob locked by pushing inside button, pushing and turning the inside button (Turning slotted button keeps the outside knob locked until the button is turned back. Inside knob cannot be locked.

Features and Benefits:

• Bright Bronze finish
• Backset: 5"
• Handing: Reversible
• Single keyed function
• Core is not included
• Core housing: 7-pin housing; accepts all BEST cores
• Roses: A - 3-3/8" concave
• Knobs: Solid brass or bronze in tulip style.
• Door thickness: 1-3/8" to 2" Standard
• Chassis: 2-1/16" diameter to fit 2-1/8" hole in door.
• Latch: 9/16" throw. Front 2-1/4 x 11/8" beveled. Latch housing fits 1" hole in edge of door.
• Strike: STK (standard) - 2-3/4" x 1-1/8" with curved lip and box (ANSI A115.3)
• Long bearing length in chassis for smooth, wear resistant operation.