| EIA ELECTRON TUBE ENVELOPE ACCOMMODATED | ST12 |
| ACCOMMODATED ITEM SECURING DEVICE TYPE | SPRING CLIP |
| DISTANCE BETWEEN MOUNTING FACILITY CENTERS | 1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP |
| OVERALL LENGTH | 2.375 INCHES NOMINAL |
| MATERIAL | STEEL |
| MOUNTING FACILITY TYPE AND QUANTITY | 2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY |
| UNTHREADED MOUNTING HOLE DIAMETER | 0.312 INCHES NOMINAL SINGLE MOUNTING FACILITY |
| STYLE DESIGNATOR | FLANGE HOLD DOWN |
| SURFACE TREATMENT | NICKEL |
| TUBE ACCOMMODATED MAXIMUM HEIGHT | 4.312 INCHES |
| TUBE ENVELOPE ACCOMMODATED MAXIMUM DIAMETER | 1.562 INCHES |