To pick a master lock, you'd have to raise the pins up with a pick until you hear a click signifying that the pin reached the shear line; then rotate a screwdriver in the keyhole as if you were turning a key. Sign up for our Newsletter! Mobile Newsletter banner close. Mobile Newsletter chat close. Mobile Newsletter chat dots. Mobile Newsletter chat avatar. Mobile Newsletter chat subscribe. Please check box to confirm. Kwikset Master Pins The Kwikset Master Pins are designed to be used in the cylinder plug on all Kwikset pin and tumbler keyed products that are keyed to a master key system.
Each pin size is color coded for easy size identification. These are factory original master pins. Apartment owner has a key that will open every unit in the complex and each tenant has a key that will only open their unit. Master pins allow you to create two "shear lines" wherby two different keys will open the same lock. Smart Key Cylinders can not be master keyed. Please contact us with any questions LOCK To understand how master keys work, you first have to have a basic idea of how locks and keys work.
Inside a cylinder lock, there is a sort of puzzle, which only the correct key can solve. The main variation in lock designs is the nature of this puzzle.
One of the most common puzzles is the pin-and-tumbler design. The main components in the pin-and-tumbler design are a series of small pins of varying length.
The pins are divided up into pairs. Each pair rests in a shaft running through the central cylinder plug and into the housing around the plug. Springs at the top of the shafts keep the pin pairs in position in the plug. When no key is inserted, the bottom pin in each pair is completely inside the plug, while the upper pin is halfway in the plug and halfway in the housing.
The position of the upper pins keeps the plug from turning -- the pins bind the plug to the housing. When you insert a key, the series of notches in the key push the pin pairs up to different levels. The incorrect key will push the pins so that most of the top pins are still partly in the plug and partly in the housing. The correct key will push each pin pair up just enough so that the point where the two pins come together lines up perfectly with the space where the cylinder and the housing come together -- this point is called the shear line.
Some locks are designed to work with two different keys. The change key will open only that specific lock, while the master key will open that lock and several others in a group. In these locks, a few of the pin pairs are separated by a third pin.
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