Section 3 - 18Key Cutting & PinningComparing A2 Pin StacksThe examples on this page show pinning forkey symbol 1AA.When pinning conventional cylinders, ignorethe control bitting. If a top pin of 20 or greateris needed, use two pins of equal length tobring the pin stack to the required height.When an odd numbered top pin is required,such as 21, use two pins that are close in size– 11 and 10 instead of 13 and 8.For the patent pin chamber in all conventionalcylinders, insert the proper bottom and toppatent pins, then insert a number 7B top pin.Pinning for all Peaks products can now beaccomplished with only one spring. That stain-less steel spring is number 3800-00-4010Stack height 26control CTR 779631master AA 951473change 1AA 593875Key in Knobtop 17 17 12 18 19 11buildup 11 10master 4 4 2 4 - 2bottom 5 5 1 4 7 37B5400-XX-1206Rim / Mortise5401-XX-1210top 11 11 14 12 12 13buildup 11 11 14 11 12 13master 4 4 2 4 - 2bottom 5 5 1 4 7 37B5800 and 5900 seriessmall formatinterchangeable coretop 6 6 4 7 10 12control 8 8 16 8 6 6master 4 4 2 4 - 2bottom 5 5 1 4 7 3Stack height 31Stack height 23"99" and "95" Key-in-Knob5400-XX-1299top 17 17 12 18 19 11buildup - - 11 - - 10master 4 4 2 4 - 2bottom 5 5 1 4 7 37B5240-XX-1206 Yale and5340-XX-1206 Medecotop 9 9 7 10 13 15control 8 8 16 8 6 6master 4 4 2 4 - 2bottom 5 5 1 4 7 3Corbin Russwin large formatinterchangeable core5140-XX-1206top 9 9 7 10 13 15control 8 8 16 8 6 6master 4 4 2 4 - 2bottom 5 5 1 4 7 3Calculating Other A2 Pinning Stacks