| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | NICKEL ALLOY OVERALL |
| MAXIMUM WORKING PRESSURE RATING AND SERVICE FOR WHICH DESIGNED | 3000.0 POUNDS PER SQUARE INCH (PSI) WATER |
| NOMINAL THREAD SIZE | 2.312 INCHES |
| NUT STYLE | HEXAGON |
| NUT HEIGHT | 1.234 INCHES MINIMUM AND 1.266 INCHES MAXIMUM |
| SMALLEST INSIDE DIAMETER | 1.940 INCHES MINIMUM AND 1.943 INCHES MAXIMUM |
| SHOULDER SEAT DIAMETER | 2.317 INCHES MINIMUM AND 2.327 INCHES MAXIMUM |
| SHOULDER STEP WIDTH | 0.312 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| SHOULDER WIDTH | 0.250 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 2.734 INCHES MINIMUM AND 2.766 INCHES MAXIMUM |
| TEMP RATING | 125.0 FAHRENHEIT NOMINAL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 12 |
| THREAD SERIES | UNS |