Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4525W found under Nut Plain Octagon by Bowen Products Corp. The National Stock Number assigned to this part is 5310002753600, 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 4525W.