| BODY OUTSIDE DIAMETER | 3.500 INCHES NOMINAL |
| BODY STEPPED INSIDE DIAMETER | 0.688 INCHES NOMINAL |
| FLANGE DIAMETER | 4.750 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS 1400 HTB1-C NATIONAL SPEC SINGLE MATERIAL RESPONSE OR BS 1400 HTB2-C NATIONAL SPEC SINGLE MATERIAL RESPONSE BODY |
| MATERIAL | COPPER ALLOY BODY |
| NOMINAL THREAD SIZE | 1.250 INCHES FIRST THREADED PORTION |
| NOMINAL THREAD SIZE | 3.500 INCHES SECOND THREADED PORTION |
| OVERALL HEIGHT | 4.375 INCHES NOMINAL |
| SEATING SURFACE SHAPE | ANGULAR |
| SEAT ANGLE IN DEG | 90.000 NOMINAL |
| SPECIAL FEATURES | 1ST THD INTERNAL,2ND THD EXTERNAL |
| THREAD CLASS | 2A SECOND THREADED PORTION |
| THREAD CLASS | 2B FIRST THREADED PORTION |
| THREAD LENGTH | 0.500 INCHES NOMINAL FIRST THREADED PORTION |
| THREAD LENGTH | 1.373 INCHES NOMINAL SECOND THREADED PORTION |
| THREAD QUANTITY PER INCH | 12 FIRST THREADED PORTION |
| THREAD QUANTITY PER INCH | 12 SECOND THREADED PORTION |
| THREAD SERIES DESIGNATOR | UN SECOND THREADED PORTION |
| THREAD SERIES DESIGNATOR | UNF FIRST THREADED PORTION |