| STYLE DESIGNATOR | ROUND FRAME, ROUND LENS TYPE |
| LAMP TYPE ACCOMMODATED AND QUANTITY | 1 INCANDESCENT |
| MOUNTING METHOD | PANEL |
| TERMINAL TYPE AND QUANTITY | 3 SOLDER LUG |
| MATERIAL | ALUMINUM BODY |
| OVERALL LENGTH | 2.250 INCHES NOMINAL |
| OVERALL DIAMETER | 0.750 INCHES NOMINAL |
| LAMP INDUSTRY NUMBER | MS25231-313S |
| LAMP BULB SIZE DESIGNATOR | T-3 1/4 |
| LAMP BASE TYPE ACCOMMODATED | MINIATURE BAYONET |
| LENS QUANTITY | 1 |
| LENS MOUNTING METHOD | SCREW ON |
| LENS TYPE | FLAT, KNURLED SINGLE LIGHT 1ST POSITION HORIZONTAL |
| LENS LIGHT TRANSMISSION CHARACTERISTIC | TRANSPARENT SINGLE LIGHT 1ST POSITION HORIZONTAL |
| LENS FACE SURFACE CONDITION | SMOOTH SINGLE LIGHT 1ST POSITION HORIZONTAL |
| LENS BACK SURFACE CONDITION | SMOOTH SINGLE LIGHT 1ST POSITION HORIZONTAL |
| LENS COLOR | GREEN SINGLE LIGHT 1ST POSITION HORIZONTAL |
| TRANSMITTED LIGHT COLOR | GREEN SINGLE LIGHT 1ST POSITION HORIZONTAL FULL DISPLAY DIVISION A |
| PANEL THICKNESS FOR WHICH DESIGNED | 0.375 INCHES MAXIMUM |
| FURNISHED ITEMS AND QUANTITY | 2 HEXAGON NUT AND |
| 1 LOCK WASHER |
| FEATURES PROVIDED | BLACKOUT DEGREE, PARTIAL AND |
| DIMMING DEVICE |
| SPECIAL FEATURES | DIM ARROW SYMBOL CW; PRESS TO TEST ENGRAVED ON LENS HOLDER |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-DTL-7961 |
| MANUFACTURERS CODE | 96906 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS25331-3-313S |