| STYLE DESIGNATOR | BEND TYPE |
| CROSS-SECTIONAL SHAPE STYLE | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| TUBING WALL CONSTRUCTION STYLE | SEAMLESS SINGLE TUBING SEGMENT |
| FLANGE QUANTITY | 2 |
| FLANGE CONNECTING FACILITY AND QUANTITY | 4 THREADED HOLE FIRST FLANGE ALL CONNECTION FACILITIES |
| 4 UNTHREADED HOLE SECOND FLANGE ALL CONNECTION FACILITIES |
| FLANGE STYLE | CHOKE TYPE FIRST FLANGE |
| COVER TYPE SECOND FLANGE |
| FLEXIBILITY | RIGID SINGLE TUBING SEGMENT |
| MATERIAL | COPPER ALLOY SINGLE TUBING SEGMENT |
| WAVEGUIDE LONGER OFFSET DISTANCE | 2.586 INCHES MINIMUM AND |
| 2.616 INCHES MAXIMUM |
| WAVEGUIDE OFFSET DISTANCE | 2.586 INCHES MINIMUM AND |
| 2.616 INCHES MAXIMUM |
| WAVEGUIDE OUTSIDE WIDTH | 0.702 INCHES NOMINAL |
| WAVEGUIDE INSIDE WIDTH | 0.622 INCHES NOMINAL |
| WAVEGUIDE INSIDE HEIGHT | 0.311 INCHES NOMINAL |
| WAVEGUIDE OUTSIDE HEIGHT | 0.391 INCHES NOMINAL |
| BEND ANGLE IN DEG | 90.0 SINGLE BEND H-PLANE |
| SURFACE TREATMENT | SILVER SINGLE TUBING SEGMENT INSIDE SURFACES |
| FLANGE INSIDE HEIGHT | 0.311 INCHES NOMINAL FIRST FLANGE |
| 0.394 INCHES NOMINAL SECOND FLANGE |
| FLANGE OUTSIDE WIDTH | 1.312 INCHES NOMINAL FIRST FLANGE |
| 1.312 INCHES NOMINAL SECOND FLANGE |
| FLANGE OUTSIDE HEIGHT | 1.312 INCHES NOMINAL FIRST FLANGE |
| 1.312 INCHES NOMINAL SECOND FLANGE |
| FLANGE INSIDE DIAMETER | 0.622 INCHES NOMINAL ALL FLANGES |
| FLANGE DEPTH | 0.375 INCHES NOMINAL FIRST FLANGE |
| 0.313 INCHES NOMINAL SECOND FLANGE |
| FLANGE CONNECTING HOLE DIAMETER | 0.144 INCHES NOMINAL SECOND FLANGE ALL CONNECTION FACILITIES |
| THREAD SERIES DESIGNATOR | UNC FIRST FLANGE ALL CONNECTION FACILITIES |
| NOMINAL THREAD SIZE | 0.138 INCHES FIRST FLANGE ALL CONNECTION FACILITIES |
| THREAD CLASS | 2B FIRST FLANGE ALL CONNECTION FACILITIES |
| THREAD QUANTITY PER INCH | 32 FIRST FLANGE ALL CONNECTION FACILITIES |
| THREAD DIRECTION | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| MAXIMUM OPERATING PRESSURE | 30.0 POUNDS PER SQUARE INCH GAGE |
| INSERTION LOSS IN DECIBELS | 0.07 |
| VOLTAGE STANDING WAVE RATIO | 1.04 |
| SPECIAL FEATURES | MTG HOLES SPACED ON 0.994 IN.BY 0.994 IN.MTG CENTERS ON EA FLANGE, TEST DATA DOCUMENT: A81349-MIL-W-3970 |
| SPECIFICATION/STANDARD DATA | 81349-MIL-W-3970/13 GOVERNMENT SPECIFICATION |
| PRECIOUS MATERIAL | SILVER |
| PRECIOUS MATERIAL AND LOCATION | TUBING SURFACE SILVER |
| SPEC/STD CONTROLLING DATA | |
| NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | MIL-DTL-3970/13 |
| MANUFACTURERS CODE | 81349 |
| DEFINITIVE GOVERNMENT SPEC/STD REFERENCE | M3970/13-011 |