Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 178030-131PC48 found under Spring by Otis Elevator Co. The National Stock Number assigned to this part is 5360003182996, 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 178030-131PC48.