Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3-160DX078X020 found under Washer Flat by Allmetal Screw Products Corp. The National Stock Number assigned to this part is 5310008040141, 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 3-160DX078X020.