Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS4H1000-2-1 found under Connector Assembly Fiber Optic by Fiber Systems International Inc. The National Stock Number assigned to this part is 6060015501630, and the Federal Supply Class is 6060 Fiber Optic Interconnectors. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FS4H1000-2-1.