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- ENVELOPE - Lime Glass
- SPACER - Mica sprayed with magnesium oxide
- PLATE - Carbonized nickel or nickel-plated steel
- GRID WIRES - Manganese-nickel or molybdenum
- GRID SIDE-RODS - Chrome copper, nickel, or nickel-plated iron
- CATHODE - Nickel coated with barium-calcium-strontium carbonates
- HEATER - Tungsten or tungsten-molybdenum alloy with insulating coating of alundum
- CATHODE TAB - Nickel
- MOUNT SUPPORT - Nickel or nickel-plated iron
- GETTER SUPPORT AND LOOP - Nickel or nickel-plated iron
- GETTER - Barium-magnesium alloys
- HEATER CONNECTOR - Nickel or nickel-plated iron
- STEM LEAD-IN WIRES - Nickel, dumet, copper
- PRESSED STEM - Lead glass
- BASE - Bakelite
- BASE PINS - Nickel-plated brass
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