Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FS4H-1GY-PROD1 found under Alignment Fixture Fiber Optic Co by Fiber Systems International Inc. The National Stock Number assigned to this part is 6070015716879, and the Federal Supply Class is 6070 Fiber Optic Accessories And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like FS4H-1GY-PROD1.