| EXTENDED WASHER DIAMETER | 2.115 INCHES MINIMUM AND 2.125 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.259 INCHES MINIMUM AND 0.279 INCHES MAXIMUM |
| FASTENER LENGTH | 6.270 INCHES MINIMUM AND 6.290 INCHES MAXIMUM |
| GRIP DIAMETER | 1.2475 INCHES MINIMUM AND 1.2490 INCHES MAXIMUM |
| GRIP LENGTH | 4.490 INCHES MINIMUM AND 4.510 INCHES MAXIMUM |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 1.145 INCHES MINIMUM AND 1.165 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| HOLE CONFIGURATION STYLE | HEXAGON FLATS |
| HOLE DIAMETER | 0.055 INCHES NOMINAL |
| HOLE QUANTITY | 4 |
| HOLE TYPE | DRILLED |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP 4340 OR STEEL COMP 8740 OR STEEL COMP 6150 OVERALL |
| MINIMUM TENSILE STRENGTH | 180000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 1.250 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.760 INCHES MINIMUM AND 1.800 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 12 |
| WIDTH BETWEEN FLATS | 1.302 INCHES MINIMUM AND 1.322 INCHES MAXIMUM |