| NOMINAL THREAD DIAMETER | 20.0 MILLIMETERS |
| NONSTANDARD THREAD PITCH DIAMETER | -32.0 TO 50.0 MILLIMETERS |
| THREAD DIRECTION | LEFT-HAND |
| THREAD LENGTH | 92.4 MILLIMETERS MINIMUM AND |
| 94.0 MILLIMETERS MAXIMUM |
| FASTENER LENGTH | 132.3 MILLIMETERS MINIMUM AND |
| 133.2 MILLIMETERS MAXIMUM |
| MATERIAL | IRON ALLOY 660 OVERALL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| HEAD HEIGHT | 12.30 MILLIMETERS MINIMUM AND |
| 13.00 MILLIMETERS MAXIMUM |
| WIDTH BETWEEN FLATS | 22.75 MILLIMETERS NOMINAL |
| EXTENDED WASHER DIAMETER | 18.82 MILLIMETERS MINIMUM AND |
| 19.10 MILLIMETERS MAXIMUM |
| EXTENDED WASHER THICKNESS | 1.75 MILLIMETERS NOMINAL |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| GROOVE DIAMETER | 42.2 MILLIMETERS NOMINAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT, TIE DOWN |
| THREAD SERIES DESIGNATOR | MJ |