Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KP22531 found under Nut Self Locking He by Kingston Div Of Scott And Fetzer Co. The National Stock Number assigned to this part is 5310012069956, 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 KP22531.