Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 380596-B21 found under Connector Assembly Fiber Optic by Compaq Computer Corp. The National Stock Number assigned to this part is 6060015034593, 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 380596-B21.