Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NP2992-46A found under Washer Flat by Barber Greene Co. The National Stock Number assigned to this part is 5310010869834, 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 NP2992-46A.