Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 120-161P28M found under Stud Plain by Bell Helicopter Textron Inc. The National Stock Number assigned to this part is 5307015845360, 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 120-161P28M.