Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BFN719C4M4 found under Nut Self Locking Pl by Bristol Inc. The National Stock Number assigned to this part is 5310010844724, 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 BFN719C4M4.