Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 800166 found under Spring Helical Exte by L3 Communications Corp. The National Stock Number assigned to this part is 5360002007922, 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 800166.