Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PK53B39 found under Connector Receptacl by The Electric Tachometer Corp. The National Stock Number assigned to this part is 5935011794654, 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 PK53B39.