Tubular Lock-Radius Drive Spindle(Grade 3) / 56 Series Tubular Knob Lock
ANSI Grade 3 
Special design for standard duty
Meets with ANSI A156.2 Grade 3,Exceeds 200,000 cycles
1,Structure: 304 stainless steel or Solid brass construction.
2,Function: 1-Entrance, 2-Privacy, 3-Passage, 4-Storeroom, 5-Classroom, 0-Dummy are available.
3,Knob Style: 6 different knob styles available to meet customer´s need.
4,Finish: SS, PSS, PB, SB, AC, AB, CP, PVD, US15A, or required.
5,Latch bolt: 60mm (2-3 / 8") ~70mm (2-3 / 4") Adjustable latch as standard; Drive-in or 6 Way latch also available as request;
6,Rosette: Small Rose (65mm) as standard
7,Keyway: KW1, SC1, Ya, C4 or special required.
8,Keying:  KA(Keyed Alike), KD (Keyed Diffrent), MSK (Master Key), CSK(Construction Keying);
9,Door thickness: Fit doors 35mm (1-3 / 8") to 50mm (2") thick, easy to install.
10,Pack: WBX (White Plain Box) ; CBX (Colorful Box) ; or VP (Clam Shell) .
11,Door Prep:Cross bore 2-1/8”(54mm),Edge bore 1”(25mm),latch face 1”x2-1/4”(25x57mm)