Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MA3453-040 found under Washer Flat by Society Of Automotive Engineers Inc. The National Stock Number assigned to this part is 5310014999350, 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 MA3453-040.