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2. Key blank - Wikipedia

   en.wikipedia.org/wiki/Key_blank

   Keyblanks pre-stamped with various imprints to discourage key duplication. A key blank (sometimes spelled keyblank) is a key that has not been cut to a specific bitting. The blank has a specific cross-sectional profile to match the keyway in a corresponding lock cylinder. Key blanks can be stamped with a manufacturer name, end-user logo or with ...

3. Schlage - Wikipedia

   en.wikipedia.org/wiki/Schlage

   The even digits are likewise, on the right side. Generally, keyways are identified by four non-zero digits in ascending order. In a large master key system, keys with fewer than four protrusions can be used to enter more than one keyway. For example, key blank 1460 will fit lock cylinder 1246, 1346, 1467, etc.

4. Interchangeable core - Wikipedia

   en.wikipedia.org/wiki/Interchangeable_core

   Interchangeable core. A six-pin interchangeable core with an 'A' keyway and individual chamber capping in an ANSI/BHMA 626 satin chrome finish. An interchangeable core or IC is an adaptable locking key cylinder, which can be rapidly exchanged in the field via the use of specialized "control keys".

5. Tubular pin tumbler lock - Wikipedia

   en.wikipedia.org/wiki/Tubular_pin_tumbler_lock

   A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.

6. Master keying - Wikipedia

   en.wikipedia.org/wiki/Master_keying

   Master key turning a pin tumbler lock with two shear points. A master key operates a set of several locks. Usually, there is nothing different about the key. The differences are in the locks the key will operate. These master-keyed locks are configured to operate with two, or more, different keys: one specific to each lock (the change key ...

7. Key (engineering) - Wikipedia

   en.wikipedia.org/wiki/Key_(engineering)

   Key (engineering) In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. The key prevents relative rotation between the two parts and may enable torque transmission. For a key to function, the shaft and rotating machine element must have a keyway and a keyseat, which is a slot and pocket in ...