Door User Manual
MASTER LOCK PRODUCT SPECIFICATIONS  FEBRUARY 2011  
Master Lock Company, 137 West Forest Hill Avenue, P.O. Box 100367, Oak Creek, Wisconsin 53154 
TELEPHONE:  800-308-9244;  FAX:  800-308-9245;  WEBSITE:  www.masterlock.com 
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BUILT-IN COMBINATION LOCKS  10 51 61 - 6 
    A.  General:   
      1.  Description:  Built-in, combination lock with steel body for mounting in 
gravity lift handle lockers. 
      2.  Operation:  Vertical travel locking bolt engages lift handle locker mechanism. 
This type of mechanism offers Slam Shut Operation. 
      3.  Mounting:  Concealed in [right] [and] [left] handed door(s). 
    B.  Standard lock:   
      1.  Lock Description:  3 digit combination and 5 preset combination changes with 
5 pin tumbler lock cylinder for access using control key. 
      2.  Model:  [1630] [1631] [1630MD] [1631MD] 
    C.  ADA compliant lock:   
      1.  Lock Description:  Provide 3 digit combination and 5 preset combination 
changes with 5 pin tumbler lock cylinder which is master keyed to a master 
key and student key. 
      2.  Model:  [1636MKADA] [1637MKADA] [1636MKMDADA] 
[1637MKMDADA] 
    D.  Dial:   
      [1.  Durable plastic dial. 
        a.  Color:  Black] 
      [2.  Metal dial. 
        a.  Color:  [Black] [Red] [Blue] [Green] [Purple]] 
      [3.  Provide dial with brass escutcheon plate.] 
*****  Locker doors which are 11/16 to 3/4 inch thick require an extension set.  Include 
the following paragraph if extension is required.  ***** 
    E.  Extension set:  Provide for locker doors 11/16 to 3/4 inch thick. 










