Schlage master key12/8/2023 ![]() Each company has a set maximum adjacent cut value (MAC) which is usually "7". Metal removed from the deep cut does not allow for metal to support the adjacent shallow cut. One last consideration is that most lock system will not allow a very deep cut next to a very shallow cut. In a five pin master key system, using four change key cuts per space the total number of individual keys can be determined by the formula four (cuts) raised to the fifth power (spaces) equal 1024 total individual key cuts. When all five spaces have been rotated the final cut number would be 45552 according to the KBA and no further individual keys cuts are available. Key cuts 32223, 32323, 32423 & 32533 can be developed.Īs with the vehicle odometer example, when those four key cut numbers have be used, Progression sequence "1" begins with the next column cut number "3" cut and rotation begins again using the next SOP rotation number ("2"). ![]() Cut numbers from other columns do not change at this time. The master key cut is a "1" cut, so there are four available numbers which can be rotated- 2/3/4/5. In the chart one example, rotation "1" is in the third space. While master key numbering systems are generated in a similar fashion, there are usually approximately only four choices of numbers which can be used for rotation. In the vehicle example, when the SOP number reaches "99999" no additional numbers are available without causing duplicate numbers. SOP in a vehicle odometer can be thought of as 54321 where the right dial is constantly rotating and the left dial changes least often. Uniformly, rotation "3" begins changing each time rotation "2” reaches "9", rotation "4" begins changing each time rotation "3" reaches "9" and rotation "5" changes each time rotation "4 reaches "9". Rotation "2" changes each time rotation "1" returns to the "0" position and starts to rotate again through the numbers. As the vehicle moves ahead, rotation "1" constantly changes from "0" through "9". Vehicle odometers operate in units of 10. SOP can be readily explained by studying the odometer in any vehicle. The bottom row shown in red shows the sequence of progression (SOP) for this master key system. Chart 1 shows an example KB A with the top row showing the masterkey cuts- 11111, and the vertical rows showing the change key cuts to be used with each masterkey cut. A key bitting array consists of the masterkey cuts to be used, the change key cuts and the order they are to be used in each space, and the sequence of progression (SOP). Terms used in this article may not conform to tightly held terms used by others but are meant to provide the simplest explanation of a complex subject. Please note these keys usually work however we do not guarantee them, this keeps our prices low.Building any master key system begins with a plan, often called a key bitting array (KBA). We find that the aftermarket non original key duplication does not always work or if they do they don't work very well.Īll of our Locksmiths are Schlage Factory Certified and are expert Key Makers.ĪLOA Security Professionals Association Inc. ![]() Schlage locks are excellent quality and the lock cylinders are very precise. We use the Schlage Factory Original Key Blank 35-100-C, this is the Schlage Genuine Key Blank exactly as in our picture. We cut your keys on the same key machine the Schlage Factory cuts their keys on which is accurate to 0.0001 of an inch. ***If your key number is a different style such as 12AA or contains letters we can't make keys from that number*** There will be a 5 digit number on the back of the key with a small letter C underneath, this is the number we need. ***WE CAN'T MAKE KEYS FROM NUMBERS ON THE PACKAGING*** We cut and ship you Genuine Schlage keys made by the code number stamped on your original Schlage key. Only order your keys from Acme online if this option is not available. If possible please visit your local Retail Storefront Locksmith and have your keys duplicated by a professional. Order from the Key Code Serial key code number stamped on the key and we can duplicate it. We make easy replacement copies of keys for all major lock manufacturers. Schlage Genuine Original cut keys for Schlage residential locks.
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