Cylindrical Grade 1 Extra Heavy Duty Knob, Non-keyed

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Cylindrical Grade 1 Extra Heavy Duty Knob, Non-keyed

Product details

Suitable for


Designed for extra heavy duty commercial, industrial and institutional applications


No exposed mounting screws
  • Knobs include steel reinforcement
  • Heat-treated heavy gauge cold rolled steel spindles add strength and security
  • The threaded outside rose assembly is adjustable for door thickness
  • Internal steel mechanism is heat-treated



For door width

(1 3/8 - 2”) 35 - 52 mm
  • Strike: ANSI 4 7/8” x 1 1/4” (123 mm x 32 mm) strike standard
  • Roses: Ø2 3/4” (70 mm) Stainless Steel or Brass base metal
  • Handing: Non-handed
  • Latchbolt: Stainless Steel 17/32” (13.5 mm) throw standard; 3/4” (19 mm) throw available
  • Cylinder: Solid Brass 6-pin cylinder Schlage C keyway with two keys per lock
  • IC Core: Solid Brass 6 or 7-pin core sold separately
  • Keying: Keyed different (KD) standard, available master keyed (MK), keyed alike (KA) and construction master keyed (CMK), see keys and keying section for additional options
  • Certifications: ANSI/BHMA certified A156.2 Series 4000 Grade 1; cUL/UL Listed for all functions up to 3 hours


2 3/4” (70 mm) standard 2 3/8” (60 mm) available


Stainless Steel or Brass, 2 1/4” x 1 1/8” (57 mm x 29 mm)


630 stainless steel satin (US32D)
Corporate Office: Häfele America Co., 3901 Cheyenne Drive, Archdale, N.C. 27263
Phone: 800.423.3531, Fax: 800.325.6197, Local Phone: 336.434.2322, Email: