CK4300 Series

A standard cylindrical lockset chassis, offering traditional knob aesthetics with ANSI/BHMA Grade 1 reliability and durability.

Ideal for demanding, high-use commercial, industrial and institutional applications, including:

  • Schools
  • Hotels
  • Apartments
  • Hospitals and nursing homes
  • Churches
  • Municipal buildings
  • Airports
  • Retail complexes
  • Offices
  • Warehouses


  • Internal parts are zinc dichromate platedfor corrosion resistance
  • Heavy wrought knobs with steel linerfor impact resistance
  • 1/2" (13mm) Stainless Steel throw latchbolt

CK4300 Series Catalog

Product installation instructions and templates are located in the Library.


Available Finishes

Click on a swatch to view finish on hardware.

BHMA 605

Bright Brass

613E Dark Oxidized Satin Bronze Equivalent
BHMA 630 Satin Stainless Steel
Series/Function Type ANSI. No Function Description
CK4310 Passage or Closet F75
  • Latchbolt by knob either side.
  • Both knobs always free
CK4320 Privacy, Bedroom or Bathroom F76A
  • Latchbolt by knob either side
  • Outside knob locked by push button
  • Outside knob unlocked by coin turned in emergency slot outside, by rotating inside knob or by closing door.
  • Inside knob always free
CK4332 Institution or Utility F87
  • Deadlocking latchbolt by key either side
  • Both knobs always rigid.
CK4351 Entrance or Office F109
  • Deadlocking latchbolt by knob either side, except when turn button locks outside knob. Pushing turn button in locks outside knob, requiring use or key outside to unlock.
  • Turning inside knob unlocks outside knob.
  • Pushing in and turning button locks outside knob, requiring key at all times. Turning inside knob does not unlock outside knob until button is manually turned to unlocked position.
  • Inside knob is always free
CK4355 Classroom F84
  • Deadlocking latchbolt by knob either side, except when key outside locks outside knob.
  • Outside knob unlocked by key outside.
  • Inside knob always free
CK4357 Storeroom or Closet F86
  • Deadlocking latchbolt by key in outside knob or by rotating inside knob
  • Outside knob always rigid
  • Inside knob always free
CK4350 Half Dummy Trim ---
  • Knob acts as pull only; no operation
  • Knob is rigid

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