Zenith 1939 - 1940 Knob
Price:
$13.00
Knob for table models where the control shafts don't extend through the cabinet holes
This knob will reach back into the cabinet. Press fit. If it's too long, the shaft of the knob can be cut to the right length using a fine tooth saw or a saw blade on a Dremel tool.
models: 5R312, 4B-314 (1939), 4K-310. Let me know if you have a different model that uses these so I can list it here.
Dimensions: base is near 1", 3/4" tall, 1/4" hole. Shaft is 11/16" long. Will fit either a split or solid shaft.