Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 305 0558 4 found under Connector Plug Elec by Trompeter Electronics Inc. The National Stock Number assigned to this part is 5935013624664, and the Federal Supply Class is 5935 Connectors Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 305 0558 4.