Correct mounting nuts used to hold the radio in place on most GM applications. Fits radios that use 7/16"-28 thread x 1/8" thick flat style hex nuts.
1940 GMC Truck Parts - Radio and Stereo Control Knobs
OER Parts offers a wide selection of Radio and Stereo Parts for your 1940 GMC Truck. OER Parts offers 1940 GMC Truck Knobs, 1940 GMC Truck Lenses, 1940 GMC Truck Radio Faceplates.