Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1641761-4 found under Stud Plain by Navair And Navsea Managed. The National Stock Number assigned to this part is 5307006377619, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 1641761-4.