Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4039378 found under Spring Helical Comp by Zodiac Aero Electric. The National Stock Number assigned to this part is 5360145034904, 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 4039378.