Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 83 025988 14500 00 found under Washer Flat by William Powell Company The. The National Stock Number assigned to this part is 5310011783704, 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 83 025988 14500 00.