| BASE STYLE | RECESSED SINGLE CONTACT |
| BULB STYLE | T (TUBULAR) |
| BULB DESIGNATOR | T-4 |
| OVERALL LENGTH | 2.562 INCHES NOMINAL |
| BULB LIGHT TRANSMISSION CHARACTERISTIC | TRANSPARENT |
| EMITTED LIGHT CHARACTERISTIC | WHITE |
| FILAMENT DESIGNATION | CC-8 |
| WATTAGE RATING | 150.000 WATTS |
| VOLTAGE RATING | 25.000 VOLTS NOMINAL |
| LIGHT OUTPUT RATING | 2700.000 LUMENS NOMINAL SINGLE RATING |
| RATED AVERAGE LIFE | HOURS |
| AVERAGE LIFE RATING IN HOURS | 3000.0 |
| BURNING POSITION | ANY ACCEPTABLE |
| FILAMENT HEAVY DUTY SERVICE RATING | NOT RATED |
| FEATURES PROVIDED | HEAT RESISTANT GLASS |
| SPECIAL FEATURES | TUNGSTEN FILAMENT MATERIAL |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 58536 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | A-A-1968 |