Part Number: 103281 (Cover complete) Part Number: 103281-2 (No description) Part Number: 10328-12X13 (Nut) Part Number: 103281-4 (Our stock) Part Number: 1032816 (Ne) Part Number: 103282 (Wrenchopen end) Part Number: 10-328203 (Screw) Part Number: 103282-1 (Valve safety) Part Number: 103282-10 (Coupler adaptor rf 50-75ohm isa ) Part Number: 103-282-20-00 (Pin) Part Number: 10328230 (Component) Part Number: 103-28274-1 (Clamp) Part Number: 103282E11 (Ne) Part Number: 103283 (N/a)