Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S1121 found under Box Connector Elect by Lapp Usa Inc. The National Stock Number assigned to this part is 5975016078986, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S1121.