WWII BK-22K Relay Assembly – New Old Stock with Original Packaging

WWII BK-22K Relay Assembly – New Old Stock with Original Packaging

Original WWII-era BK-22K Relay Assembly, marked Stock No. 2Z7622K and manufactured by Oak Manufacturing Company of Crystal Lake, Illinois. This example retains its original wartime packaging, parts bag, and packing slip listing included hardware and components. The relay assembly features a large bakelite terminal board with numerous connection points and appears to be unused surplus removed directly from military stores.

Relay assemblies such as the BK-22K were used in military communications, radar, fire-control, and electronic switching systems where reliable electrical routing was required. The presence of the original packaging and documentation greatly enhances collector interest and display value.