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.
1989 Chevrolet Truck Parts - Radio and Stereo Parts
OER Parts offers a wide selection of Radio and Stereo Parts for your 1989 Chevrolet Truck. OER Parts offers 1989 Chevrolet Truck Knobs, 1989 Chevrolet Truck Lenses, 1989 Chevrolet Truck Radio Faceplates.