Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X0300120414 found under Seat Helical Compression Spring by Yanmar Diesel America Corp. The National Stock Number assigned to this part is 5340015617588, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like X0300120414.