| FIRST MOUNTING HOLE SPACING | 0.188 INCHES NOMINAL |
| FLANGE THICKNESS | 0.375 INCHES NOMINAL |
| FOURTH MOUNTING HOLE SPACING | 1.375 INCHES NOMINAL |
| HEIGHT ABOVE MOUNTING SURFACE | 2.750 INCHES NOMINAL |
| IDENTIFICATION CODE COLOR | WHITE |
| OVERALL HEIGHT | 3.250 INCHES NOMINAL |
| OVERALL LENGTH | 1.750 INCHES NOMINAL |
| OVERALL WIDTH | 1.750 INCHES NOMINAL |
| MATERIAL | ALUMINUM MOUNTING BASE |
| MATERIAL | PORCELAIN SHANK |
| MOUNTING FACILITY TYPE AND QUANTITY | 4 UNTHREADED HOLE(S) |
| MOUNTING HOLE DIAMETER | 0.200 INCHES NOMINAL |
| SCREW THREAD DIAMETER AND LOCATION | 0.250 CENTER STUD INCHES NOMINAL |
| SCREW THREAD QUANTITY PER INCH AND LOCATION | 20 CENTER STUD |
| SECOND MOUNTING HOLE SPACING | 1.375 INCHES NOMINAL |
| SPECIAL FEATURES | STYLE M21 EXCEPT W/O CORRUGATED BODY |
| TOP DIAMETER | 1.000 INCHES NOMINAL |
| STYLE DESIGNATOR | BEEHIVE, FLANGED |
| THIRD MOUNTING HOLE SPACING | 0.188 INCHES NOMINAL |
| THREAD CLASS AND LOCATION | 2A CENTER STUD |