Thank you for selecting Aerospace Aviation 360 for 5501-1-4-WS by Apsa Connector under Electrical Connectors. We are proud to be an ASAP Semiconductor owned and operated website, a leading distributor of aviation and aerospace part numbers like 5501-1-4-WS. To help us better understand your parts requirements, please fill out an RFQ form for part number 5501-1-4-WS with your details, and our customer executive will respond to your RFQ in 15 minutes or less.