NSN: 6240-00-957-5721

Technical Characteristics

• Overall Length

  5.938 inches maximum

• Bulb Designator

  a-21

• Average Life Rating In Hours

  1200.0

• Light Center Length

  4.188 inches nominal

• Filament Designation

  cc-8

• Wattage Rating

  100.000 watts and 50.000 watts and 150.000 watts

• Light Output Rating

  1630.000 lumens nominal 2nd rating

• Base Style

  three contact medium screw

• Emitted Light Characteristic

  white, soft

• Bulb Style

  a (arbitrary designation)

• Light Output Rating

  560.000 lumens nominal 1st rating

• Burning Position

  base down

• Filament Heavy Duty Service Rating

  not rated

• Light Output Rating

  2190.000 lumens nominal 3rd rating

• Voltage Rating

  120.000 volts nominal

• Bulb Light Transmission Characteristic

  translucent

• Rated Average Life

  hours