| BASE STYLE | MOGUL SCREW |
| BULB STYLE | PS (PEAR SHAPE, STRAIGHT NECK) |
| BULB DESIGNATOR | BT-28/E-28 |
| OVERALL LENGTH | 8.312 INCHES NOMINAL |
| BULB LIGHT TRANSMISSION CHARACTERISTIC | TRANSPARENT |
| LIGHT INTENSITY DISTRIBUTION FEATURE | PHOSPHOR COATED BAND |
| EMITTED LIGHT CHARACTERISTIC | COLORLESS |
| WATTAGE RATING | 250.000 WATTS |
| LIGHT OUTPUT RATING | 17000.000 LUMENS NOMINAL 1ST RATING |
| 20500.000 LUMENS NOMINAL 2ND RATING |
| RATED AVERAGE LIFE | HOURS |
| AVERAGE LIFE RATING IN HOURS | 10000.000 |
| BURNING POSITION | BASE DOWN |
| NONDEFINITIVE SPEC/STD DATA | 5 TYPE |
| CRITICALITY CODE JUSTIFICATION | ZZZT |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 58536 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | A-A-1758 |