| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.219 INCHES NOMINAL |
| EXTENDED WASHER DIAMETER | 1.000 INCHES NOMINAL |
| EXTENDED WASHER THICKNESS | 0.125 INCHES NOMINAL |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FASTENER LENGTH | 1.938 INCHES NOMINAL |
| FIRST DIAMETER FROM HEAD | 0.555 INCHES MINIMUM AND 0.560 INCHES MAXIMUM |
| HARDNESS RATING | 27.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.625 INCHES NOMINAL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| HOLE CONFIGURATION STYLE | HEXAGON LONGITUDINAL HOLE |
| HOLE DIAMETER | 0.076 INCHES NOMINAL |
| HOLE QUANTITY | 6 |
| HOLE TYPE | DRILLED |
| MATERIAL | STEEL COMP 3140 OR STEEL COMP 4140 OVERALL |
| MINIMUM YIELD STRENGTH | 110000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.688 INCHES |
| NONSTANDARD THREAD PITCH DIAMETER | +0.6439 TO 0.6469 INCHES |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.719 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UN |
| THREAD QUANTITY PER INCH | 16 |
| WIDTH BETWEEN FLATS | 0.813 INCHES NOMINAL |