Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3M63N8A72-4 found under Nut Assembly Self Locking Gang C by Bristol Inc. The National Stock Number assigned to this part is 5310003854043, 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 3M63N8A72-4.