• KeyMark keys are protected by a utility patent, no unauthorized key duplication
  • Also available in colours red or blue
  • Available Keyed-A-Like, Keyed Different and Master Keyed
  • KeyMark can be used to retrofit "Best" Interchangeable Core Products
  • KeyMark product line also includes cylinders to retrofit existing door hardware
  Anodized Aluminum (Case hardened shackles, IC Core only, red or blue)
Product # Body Width A B C Key
Retained
No Key
Retained
53K410L 1½" 38mm ¼" 6mm 1" 26mm ¾" 20mm   X
53K4IEL 1½" 38mm ¼" 6mm 1½" 38mm ¾" 20mm   X
53K4IGL 1½" 38mm ¼" 6mm 3" 76mm ¾" 20mm   X
53K4I0K 1½" 38mm ¼" 6mm 1" 26mm ¾" 20mm X  
53K4IEK 1½" 38mm ¼" 6mm 1" 26mm ¾" 20mm X  
53K4IGK 1½" 38mm ¼" 6mm 2" 51mm ¾" 20mm X  

  Solid Brass (IC Core Only, hardened steel shackles)
Product # Body Width A B C Key
Retained
No Key
Retained
53K5IOLO 1¾" 44mm 5/16" 8mm 1 1/8" 28mm ¾" 20mm   X
53K5IEL0 1¾" 44mm 5/16" 8mm 2" 51mm ¾" 20mm   X
53K5IGL0 1¾" 44mm 5/16" 8mm 3" 76mm ¾" 20mm   X
53K6IOLO 2" 51mm 3/8" 9.5mm 1 1/8" 28mm ¾" 20mm   X
53K61ELO 2" 51mm 3/8" 9.5mm 2" 51mm ¾" 20mm   X
53K5IOKO 1¾" 44mm 5/16" 8mm 1 1/8" 28mm ¾" 20mm X  
53K5IEK0 1¾" 44mm 5/16" 8mm 2" 51mm ¾" 20mm X  
53K5IGK0 1¾" 44mm 5/16" 8mm 3" 76mm ¾" 20mm X  
53K6IOKO 2" 51mm 3/8" 9.5mm 1 1/8" 28mm ¾" 20mm X  
53K61EKO 2" 51mm 3/8" 9.5mm 2" 51mm ¾" 20mm X