Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number WSF2205A400X found under Spring Helical Compression by U S Industries Inc. The National Stock Number assigned to this part is 5360002900848, 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 WSF2205A400X.