Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 657-0027-002 found under Spring Helical Exte by Bf Goodrich Aerospace. The National Stock Number assigned to this part is 5360011004651, 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 657-0027-002.