Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6841728-021 found under Stud Stepped by Rolls Royce Corp. The National Stock Number assigned to this part is 5307002081701, 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 6841728-021.