Part Number: 12-H-42 (Switch) Part Number: 12H43 (No description) Part Number: 12-H-43M (Component) Part Number: 12H44-7-250 (Tbolt) Part Number: 12H454 (National semiconductor) Part Number: 12H454CIV (Nationl) Part Number: 12H458CIV (Ne) Part Number: 12H458CIVF (Ne) Part Number: 12H46K41 (Ne) Part Number: 12H470K (Ne) Part Number: 12H470R (Ne) Part Number: 12H4802 (Plastic retainer) Part Number: 12H4804 (Plastic retainer) Part Number: 12H487-9 (Main fittings)