| HARDNESS RATING | 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM |
| OVERALL LENGTH | 6.000 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-N-286 FED SPEC ALL MATERIAL RESPONSES |
| MATERIAL | NICKEL ALLOY K-500 OR NICKEL ALLOY 502 |
| NOMINAL THREAD SIZE | 1.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 1.250 INCHES STUD THREAD |
| NONDEFINITIVE SPEC/STD DATA | 3 TYPE AND A STYLE AND 500 GRADE |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 5HF STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 1.875 INCHES MINIMUM AND 2.233 INCHES MAXIMUM STUD THREAD |
| THREAD LENGTH | 2.750 INCHES MINIMUM AND 3.108 INCHES MAXIMUM NUT THREAD |
| THREAD QUANTITY PER INCH | 7 NUT THREAD |
| THREAD QUANTITY PER INCH | 7 STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) STUD THREAD |