Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number P5 20 found under Spring Helical Compression by Flowserve Corporation. The National Stock Number assigned to this part is 5360016641744, 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 P5 20.