Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 109917 found under Nut Self Locking Ba by Astronautics Corporation Of America. The National Stock Number assigned to this part is 5310015879281, 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 109917.