Thank you for choosing Aerospace-Aviation360.com for Fiber Optic Connectors of Part Number 503-000-001L999 by Diamond Reo Truck Co. This is an ASAP Semiconductor owned and operated website. We are a leading supplier of aviation and aerospace parts, information technology hardware, and board level components. Our comprehensive and customized product database allows us to provide high quality components, sub-assemblies, and completed assemblies to our customers worldwide with fast turnaround times. You have 24/7 x 365 access to our diverse product database with the fastest lead times in the industry.