| BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 317 OR STEEL COMP 347 OVERALL |
| NOMINAL THREAD SIZE | 1.250 INCHES |
| NONDEFINITIVE SPEC/STD DATA | 4 TYPE AND 16 STYLE AND A CONDITION |
| NUT HEIGHT | 1.030 INCHES MINIMUM AND 1.094 INCHES MAXIMUM |
| NUT STYLE | SLOTTED, HEXAGON |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 7 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM |