Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 60-686 PIECE 546 found under Nut Self Locking He by Steward Machine Co Inc. The National Stock Number assigned to this part is 5310011997857, 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 60-686 PIECE 546.