Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 877B-3SD-16 found under Stud Locked In by Alcoa Global Fasteners Inc. The National Stock Number assigned to this part is 5307008988398, 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 877B-3SD-16.