| MATERIAL | STEEL |
| STYLE DESIGNATOR | ROUND, ONE BOLT HOLE CIRCLE |
| BOLT CIRCLE DIAMETER | 6.062 INCHES NOMINAL |
| FLANGE DIAMETER | 7.188 INCHES MINIMUM AND |
| 7.225 INCHES MAXIMUM |
| BOLT HOLE DIAMETER | 0.562 INCHES NOMINAL |
| BOLT HOLE QUANTITY | 8 |
| FLANGE SECTION STYLE | PLAIN FACE |
| THICKNESS | 0.562 INCHES MINIMUM AND |
| 0.600 INCHES MAXIMUM |
| NOMINAL PIPE SIZE FOR WHICH DESIGNED | 3.500 INCHES |
| MAXIMUM OPERATING PRESSURE AND MEDIA FOR WHICH DESIGNED | 150.0 POUNDS PER SQUARE INCH STEAM AND |
| 200.0 POUNDS PER SQUARE INCH GAS AND |
| 200.0 POUNDS PER SQUARE INCH OIL AND |
| 200.0 POUNDS PER SQUARE INCH WATER |
| MAXIMUM OPERATING TEMP AND MEDIA FOR WHICH DESIGNED | 775.0 DEG FAHRENHEIT STEAM AND |
| 300.0 DEG FAHRENHEIT GAS AND |
| 300.0 DEG FAHRENHEIT OIL AND |
| 300.0 DEG FAHRENHEIT WATER |
| FACE SEATING SURFACE CONDITION | SERRATED |
| NONDEFINITIVE SPEC/STD DATA | C TYPE |
| DEPARTURE FROM CITED DESIGNATOR | AS MODIFIED BYTHK OF FLANGE |
| SPEC/STD CONTROLLING DATA | |
| MANUFACTURERS CODE | 81349 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-F-20670, TYPE C, SZ 3-1/2 IN |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MILF20670 |