Switchcraft 1/4" Jack Socket For Electric Guitar - Stereo
 
Switchcraft - The name says it all. Suppliers for all top quality guitars over the past 50 years. Comes complete with nut and washer. This stereo version has an extra lug and is generally used in instruments that have active electronics so that when the jack plug is removed from the socket, the 9 volt battery that is used to power the active electronics disconnects, thereby preserving battery life.

U.S. 3/8-32 threads Bushing length .276"