| EIA ELECTRON TUBE ENVELOPE ACCOMMODATED | T9 |
| ACCOMMODATED ITEM SECURING DEVICE TYPE | FRICTION FASTENER |
| DISTANCE BETWEEN MOUNTING FACILITY CENTERS | 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP |
| FEATURES PROVIDED | BASE PLATE |
| OVERALL HEIGHT | 4.219 INCHES NOMINAL |
| OVERALL LENGTH | 2.062 INCHES NOMINAL |
| OVERALL WIDTH | 1.438 INCHES NOMINAL |
| MATERIAL | STEEL |
| MOUNTING FACILITY TYPE AND QUANTITY | 2 THREADED STUD(S) SINGLE MOUNTING FACILITY |
| MOUNTING STUD LENGTH | 4.125 INCHES NOMINAL SINGLE MOUNTING FACILITY |
| NOMINAL THREAD SIZE | 0.138 INCHES SINGLE MOUNTING FACILITY |
| STYLE DESIGNATOR | SPRING LOCK DUAL PILLAR HOLD DOWN |
| THREAD CLASS | 2A SINGLE MOUNTING FACILITY |
| THREAD QUANTITY PER INCH | 32 SINGLE MOUNTING FACILITY |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY |