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  2. Interchangeable core - Wikipedia

    en.wikipedia.org/wiki/Interchangeable_core

    Interchangeable cores require a notch at the tip of each key to properly align the peaks and valleys of each blade with the combinating pins in the chambers of the mechanism; as a consequence, these keys are always configured and cut from blade tip to bow. Conversely, conventional cylinders and removable cores use a shoulder near the bow of ...

  3. Interchangeable parts - Wikipedia

    en.wikipedia.org/wiki/Interchangeable_parts

    Interchangeable parts are parts that are identical for practical purposes. They are made to specifications that ensure that they are so nearly identical that they will fit into any assembly of the same type.

  4. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    Cylinder Head Temperature (Piston engine aviation) CI cost index CID Customer induced damage C/L Centre line CL checklist: A flight deck manual, usually part of a Quick Reference Handbook: CLR Clear Seen on GFA and is used for sky coverage CMC central maintenance computer CMM component maintenance manual CMO Certificate Management Office: FAA CMV

  5. Glossary of aerospace engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_aerospace...

    These environments include, but are not limited to: science platform aircraft and aircraft-deployable systems; space vehicles, space stations, habitats and lunar and planetary surface construction bases; and Earth-based control, experiment, launch, logistics, payload, simulation and test facilities. Earth analogs to space applications may ...

  6. Spare part - Wikipedia

    en.wikipedia.org/wiki/Spare_part

    A spare part, spare, service part, repair part, or replacement part, is an interchangeable part that is kept in an inventory and used for the repair or refurbishment of defective equipment/units. Spare parts are an important feature of logistics engineering and supply chain management , often comprising dedicated spare parts management systems.

  7. Rekeying - Wikipedia

    en.wikipedia.org/wiki/Rekeying

    Locks are usually re keyed to build master-key systems, make a set of locks share a common key, or to eliminate compromised keys. [2] [3] [4] Sometimes worn pins are replaced with new pins if the old pins become too short to reach the shear-line. [5] The shear-line is the thin line shared by the lock plug and its cylindrical housing. If a pin ...

  8. Interchangeability - Wikipedia

    en.wikipedia.org/wiki/Interchangeability

    Interchangeable parts, the ability to select components for assembly at random and fit them together within proper tolerances; Interchangeability (computer science), the ability that an object can be replaced by another object without affecting code using the object; Interchangeable random variables in mathematics

  9. Pin tumbler lock - Wikipedia

    en.wikipedia.org/wiki/Pin_tumbler_lock

    Each tenant is given a key that only unlocks their own door, called the change key, but the second key is the master key, which unlocks all the doors, and is usually kept by the building manager, so they can enter any room in the building. In a master-keyed lock, some or all of the pin chambers in the lock have three pins in them instead of two.