Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D2-8781PC19 found under Nut Plain Round by U S M Corp. The National Stock Number assigned to this part is 5310001856337, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D2-8781PC19.