Standard Tolerances Inside Diameter Stock Number Neck I.D. Convolution I.D./O.D. Convoluted Length Trim Length 1"-4" 7513-7544 0.01 0.03 0.06 0.03 4.125"-6" 7545-7557 0.01 0.04 0.06 0.03 6.25"-12" 7558-7577 0.02 0.06 0.09 0.06 12.25"-24" 7578-7586 0.03 0.09 0.12 0.09 26"-48" 7587-7598 0.06 0.12 0.12 0.09 50"-96" 7599-75110 0.12 0.18 0.18 0.12 Vacuum Applications Beryllium Copper Bellows Nomenclature Bellows Movements Standard Tolerances Multiply or Laminated Bellows Neck Trims Explanation of Tabulated Data Ordering Instructions