NC LOCKSMITH LICENSE EXAM: SECTION 7 - LOCKSET FUNCTIONS QUESTIONS AND ANSWERS 2025

NC LOCKSMITH LICENSE EXAM: SECTION 7 - LOCKSET FUNCTIONS QUESTIONS AND ANSWERS 2025 Bitting - RIGHT ANSWER -n. 1. the number(s) which represent(s) the dimensions of the key 2. the actual cut(s) or combination of akey Bitting list - RIGHT ANSWER -A listing of all key combinations used within a system. The combinations are usually arranged in order of the blind code, direct code, and/or key symbol. Block Master - RIGHT ANSWER -the one pin master for all combinations listed as a block in the standard progression format Build-up pin - RIGHT ANSWER -the additional element of a pin stack required to allow operation at different shear lines in a cylinder Change key - RIGHT ANSWER -1. A key which operates only one cylinder or a group of keyed alike cylinders in a keying system. 2. Any device that is used to mechanically or electronically allow resetting of a certain key or combination lock. see also "reset key"#1 Combination - RIGHT ANSWER -the groups of numbers which represent the bitting of a key and/or the tumblers of a lock or cylinder Five pin master key - RIGHT ANSWER -a master key for all combinations obtained by progressing five bitting positions Four column progression - RIGHT ANSWER -a process wherein key bittings are obtained by using the cut possibilities in four columns of the key bitting array. Four pin master key - RIGHT ANSWER -a master key for all combinations obtained by progressing four bitting positions. Grand Master Key (GMK) - RIGHT ANSWER -the which operates two or more separate groups of locks, which each operated by a different master key. Grand Master Key System - RIGHT ANSWER -a master key system which has exactly three levels of keying. Great Grand Master Key (GGMK) - RIGHT ANSWER -a key which operates two or more separate groups of locks which are each operated by different grand master key Great Grand Master Key System - RIGHT ANSWER -a master key system that has exactly four levels of keying. Great Great Grand Master Key (GGGMK) - RIGHT ANSWER -the key which operates two or more separate groups of locks which are operated by different great grand master keys. Great Great Grand Master Key System - RIGHT ANSWER -a master key system which has five or more levels of keying. Hardware Schedule - RIGHT ANSWER -a listing of the door hardware used on a particular job it includes the types of hardware, manufacturers, locations, finishes, and sizes. It should include a keying schedule specifying how each locking device is to by keyed. Horizontal Group Master Key - RIGHT ANSWER -the two pin master key for all combinations listed in all blocks in a line across a page in a standard progression format. Incidental Master Key - RIGHT ANSWER -a key cut to an unplanned shear line created when the cylinders is combinated to the top master key and a change key. Key Bitting Array - RIGHT ANSWER -a matrix (graphic) display of all possible bittings for change keys and master keys as related to the top master key. Key Symbol - RIGHT ANSWER -a designation used for a key combination in the standard key coding system, e.g. A, AA, AA1, etc. Keying Schedule - RIGHT ANSWER -a detailed specification of the keying system listing how all cylinders are to be keyed and the quantities, markings, and shipping instructions of all keys and/or cylinders to be provided. Keying Symbol - RIGHT ANSWER -a designation used for a lock or cylinder combination in the standard key coding system, e.g. AA1, XAA1, XIX, etc. Levels of Keying - RIGHT ANSWER -the divisions of a master key system into hierarchies of access, as shown in the following tables. Note: the standard key coding system has been expanded to include key symbols for systems of more than four levels of keying. Maison Key System - RIGHT ANSWER -[from the French meaning "house" key system] a keying system, in which one or more cylinders are operated by every key (or relatively large numbers of different keys) in the system: e.g. main entrances of apartment buildings operated by all individual suite keys of the building Master Key - RIGHT ANSWER -1. A key which operates all master keyed locks or cylinders in a group, each lock or cylinder usually operated by its own change key. 2. To combine a group of locks or cylinders such that each is operated by its own change key as well as by a master key by for the entire group. 3. An automotive key which operates all or most locks on a vehicle where there is also a valet key employed. Master Key Changes - RIGHT ANSWER -the number of different usable change keys available under a given master key. Master Key System - RIGHT ANSWER -1. Any keying arrangement which has two or more levels of keying. 2. A keying arrangement which has exactly two levels of keying. Master Pin - RIGHT ANSWER -1. Usually a cylindrical shaped tumbler, flat on both ends, placed between the top and bottom pin to create an additional shear line. Maximum Adjacent Cut Specification (MACS) - RIGHT ANSWER -the maximum allowable difference between adjacent cut depths. Multiplex Key System - RIGHT ANSWER -1. A series of different key sections which may be used to expand a master key system by repeating bittings on additional key sections. This type of system always includes another key section which will enter more than one, or all of the key ways. 2. A keying system which uses such key ways ans key systems. Odometer Method - RIGHT ANSWER -a means of progressing key bittings using a progression sequence of right to left. One Column Progression - RIGHT ANSWER -a process where key bittings are obtained by using the cut possibilities in one column of a key bitting array Parity - RIGHT ANSWER -the property of being either even or odd, as the depth number of a bitting in a combination, or the possible progressives in a given position of a two-step progression Pinning Chart - RIGHT ANSWER -a numerical diagram which indicates the sizes and order of installation of the various pins into a cylinder. The sizes are usually regulated by the manufacturer's reference number which equals the quantity of increments a tumbler represents Progression - RIGHT ANSWER -a logical sequence of selecting possible key bittings, usually in numerical order from the key bitting array Progression Column - RIGHT ANSWER -a listing of the key bitting possibilities available in one bitting position as displayed in a column of the key bitting array Progression List - RIGHT ANSWER -a bitting list of change keys and master keys arranged in sequence of progression. Random Master Keying - RIGHT ANSWER -an undesirable process used to master key which uses unrelated keys to create a system Rotating Constant - RIGHT ANSWER -one or more cut(s) in a key of any level which remains constant throughout all levels and are identical to the top master key cuts in their corresponding positions. The position where the top master key cuts are held constant may be moved, always in logical sequence. Rotating Constant Method - RIGHT ANSWER -a method used to progress key bittings in master key system, wherein at least one cut in each key is identical to the corresponding cut in the top master key. The identical cut(s) is moved to different locations in a logical sequence until each possible planned position has been moved. Row Master Key - RIGHT ANSWER -the one-pin master key for all combinations listed on the same line across a page in the standard progression format. Single Key Section - RIGHT ANSWER -an individual key section which can be used in a multiplex key system. Single Step Progression - RIGHT ANSWER -a progression using a one increment difference between bittings of a given postion Standard Key Coding System - RIGHT ANSWER -an industry standard and uniform method of designating all keys and/or cylinders in a master key system. The designation automatically indicates the exact function and keying level of each key and/or cylinder in the system usually without further explanation. Standard Progression Format - RIGHT ANSWER -a systematic method of listing and relating all change key combinations to all master key combinations in a master key system. The listing is divided into segments known as blocks, horizontal groups, vertical groups, rows, and pages. For levels of control. Sub-Master Key - RIGHT ANSWER -the master key level immediatly below the master key in a system of six or more levels of keying Theoretical Key Changes - RIGHT ANSWER -the total possible number of different combinations available for a specific cylinder of lock mechanism. Three Column Progression - RIGHT ANSWER -a process where key bittings are obtained by using the cut possibilities in three columns of the key bitting array Three Pin Master Key - RIGHT ANSWER -a master key for all combinations obtained by progressing three bitting positions. Top Master Key (TMK) - RIGHT ANSWER -the highest level master key in the master key system Total Position Progression - RIGHT ANSWER -a process used to obtain key bittings in a master key system wherein bittings of a change keys differ from those of the top master key in all bitting array. Two Column Progression - RIGHT ANSWER -a process wherein key bittings are obtained by using the cut possibilities in two columns of the key bitting array. Two Pin Master Key - RIGHT ANSWER -a master key for all combinations obtained by progressing two bitting positions Two Step Progression - RIGHT ANSWER -a progression using a two increment differences between bittings of a given position