S-645, 6050A, Aircraft Avionics Radio Dial Control Knob
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Aircraft Avionics Radio Plastic Dial Control Knob. P/N S-645 or 6050A. Alternate P/Ns 1751806, S645-3, S676-3. NSN: 5355-00-721-6944. It fits 1/4" knob shaft stem. It is in good condition.