Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 127 300491 00 found under Spring Helical Comp by Guardian Electric. The National Stock Number assigned to this part is 5360013752882, 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 127 300491 00.