Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 11450139-1 found under Spring Helical Compression by Swaim Machine Co Inc. The National Stock Number assigned to this part is 5360012861100, 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 11450139-1.