Thank you for selecting Aerospace Aviation 360 for P-321-SB by Belden under Connector Headers And Pcb Receptacles. We are proud to be an ASAP Semiconductor owned and operated website, a leading distributor of aviation and aerospace part numbers like P-321-SB. To help us better understand your parts requirements, please fill out an RFQ form for part number P-321-SB with your details, and our customer executive will respond to your RFQ in 15 minutes or less.