3a thread class right-hand acft model HH65a engine anti-icing valve hot air; o/a length 2.617 in.; o/a dia.1.854 in.; includes two hose fittings of different sizes; two drilled holes for mounting 0.280 in.dia.; one drilled hole on one side 0.505 in.dia; 0.469 in.hole depth; height 0.781 in.