MIL-DTL-16377-27 Fixtures, Lighting; Incandescent And Ssl Equivalent, General Lighting 50 Watts, 120 Volts, Watertight, Symbols 92.2, 93.2, 93.4, 93.5, 92.2Ssl, 93.2Ssl, 93.4Ssl, And 93.5Ssl