| 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 AND |
| ALUMINUM ALLOY BODY |
| OVERALL LENGTH | 2.250 INCHES MAXIMUM |
| OVERALL DIAMETER | 0.750 INCHES MAXIMUM |
| SURFACE TREATMENT | ANODIZE BODY |
| LAMP INDUSTRY NUMBER | 313 |
| LAMP BULB SIZE DESIGNATOR | T-3 1/4 |
| LAMP BASE TYPE ACCOMMODATED | MINIATURE BAYONET |
| LENS QUANTITY | 1 |
| LENS MOUNTING METHOD | SCREW IN |
| LENS TYPE | FLAT, KNURLED, EXTERNAL THREAD 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 | RED SINGLE LIGHT 1ST POSITION HORIZONTAL |
| TRANSMITTED LIGHT COLOR | RED SINGLE LIGHT 1ST POSITION HORIZONTAL FULL DISPLAY DIVISION A |
| PANEL ACCOMMODATION HOLE DIAMETER | 0.609 INCHES MINIMUM AND |
| 0.625 INCHES MAXIMUM |
| PANEL THICKNESS FOR WHICH DESIGNED | 0.375 INCHES MAXIMUM |
| HAZARDOUS LOCATIONS/ENVIRONMENTAL PROTECTION | DUSTTIGHT AND |
| HUMIDITY RESISTANT AND |
| SALT SPRAY RESISTANT |
| FURNISHED ITEMS AND QUANTITY | 2 HEXAGON NUT AND |
| 1 LOCK WASHER |
| FEATURES PROVIDED | BLACKOUT DEGREE, PARTIAL AND |
| DIMMING DEVICE AND |
| PRESS TO TEST |
| SPECIAL FEATURES | DIM ARROW SYMBOL CW; PRESS TO TEST ENGRAVED ON HOLDER; THE DIFFERENCE BETWEEN P/N MS25331-2-313 AND P/N MS25331-2-313S IS THAT P/N MS25331-2-313S HAS A MINIMUM BULB LENGTH OF 1.080 INCHES. |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 96906 |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS25331 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MS25331-2-313S |