Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number Z54263 found under Spring Spiral Torsion by Eaton Aerospace Ltd. The National Stock Number assigned to this part is 5360000054220, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like Z54263.