Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F2 18 BLACK found under Insulation Sleevingelectrical by Sumitomo Machinery Corp Of America. The National Stock Number assigned to this part is 5970016960446, and the Federal Supply Class is 5970 Electrical Insulators And Insulating Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like F2 18 BLACK.