Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R4303S found under Terminal Lug by Electro Term Inc. The National Stock Number assigned to this part is 5940001071481, and the Federal Supply Class is 5940 Lugs Terminals And Terminal Strips. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like R4303S.