Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S1 1000 00 found under Spring And Ball Check by Fenner America Inc. The National Stock Number assigned to this part is 2590011079093, and the Federal Supply Class is 2590 Miscellaneous Vehicular Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S1 1000 00.