Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 83500-1018 found under Nut Self Locking Spline by Tab Engineering. The National Stock Number assigned to this part is 5310014658951, 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 83500-1018.