Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D5288-4M3 found under Stud Plain by U S Dept Of Transportation Federal. The National Stock Number assigned to this part is 5307009183496, 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 D5288-4M3.