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B Series Cylindrical Lock

ANSI Grade 2 Heavy Duty


  • Cylindrical designed, for medium and light duty commercial buildings.
  • Interchangeable core knobs are easy to change handing.
  • Threaded outside rose adjustable for various door thickness.
  • Internal steel mechanisms are corrosion treated for normal atmospheric conditions.
  • Wide selection of finishes and functions.


Door Thickness• 1 3/8″ to 2″ thickness wood or metal door installation.
Backset• 2 3/4″ standard, 2 3/8″, 3 3/4″ and 5″ optional.
Latchbolt• 1/2″ throw, UL listed, faceplate self-adjusted.
Handing• Completely reversible.
Strike• T-strike standard, ANSI strike or Full lip strike optional.
Trim• Roses are wrought brass, bronze or stainless steel,installed over wrought steel mounting plates.
• Knobs are brass or bronze secured by steel knob retainer which cannot be depressed when lock has been locked.
Door Preparation• 2 1/8″ cross bore, 1″ edge bore.
Master Keying• Can be masterkeyed or grand masterkeyed.
Interchangeable Core• 6 or 7-pin, Compatible with Best and Falcon small format interchangeable cores.
Finishes• 605, 606, 612, 613, 625, 626, 629 and 630.
Functions• Entry / Office Lock (01), Store Door Lock (02), Classroom Lock (03), Communicating Lock (04), Storeroom Lock (05), Institutional Lock (09), Connecting Room / Exit Lock (63).
Certifications• UL listed for “A” label (3-hour) single swinging door (4′ x 8′).
• Listed in BHMA Directory of Certified Locks and Latches as conforming to ANSI A156.2, Series 4000, Grade 2.
Knob Design• Ball and Tulip optional.

Headquarters and Operation Office

I-TEK Metal Manufacturing Co., Ltd.

Global Office


BHMA, UL, Intertek
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