Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FDB-1210-85010B found under Disk Seating Tooling by Fatigue Technology International. The National Stock Number assigned to this part is 4920015914905, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FDB-1210-85010B.