These plugs are commonly used for connecting motors and switches in 1940s and 50s jukeboxes.

Sometimes you just can't clean them enough to make them reliable so we tracked down both sockets and plugs.

You are more likely to need a socket as the connections are very difficult to clean up if damaged.

Specifications:

• 300 Series
• Contacts - 4
• Plug, Flared Hole in Cap - no slits for clips though - similar to the 304FHT.
• Plug Prongs are 5/32" wide x 3/64" thick
• Phosphor bronze "knife-switch" style
• Body made of Molded Bakelite
• Polarized contacts 

Can replace:

• AMI/ROWE
• 17596 socket - Rockola
• 17595 plug - Rockola