Thank you for selecting Aerospace Aviation 360 for 4058 by Keystone Electronics Corp 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 4058. To help us better understand your parts requirements, please fill out an RFQ form for part number 4058 with your details, and our customer executive will respond to your RFQ in 15 minutes or less.