Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SPC21420 found under Adapterelectrical Conduit by Spc Technology. The National Stock Number assigned to this part is 5975016902452, 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 SPC21420.