| THREAD SERIES DESIGNATOR | M |
| NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS |
| THREAD PITCH IN MILLIMETERS | 1.25 |
| THREAD CLASS | 5G6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 13.0 MILLIMETERS NOMINAL |
| FASTENER LENGTH | 21.00 MILLIMETERS MINIMUM AND |
| 21.25 MILLIMETERS MAXIMUM |
| MATERIAL | STEEL PROPERTY CLASS 18.8 OVERALL |
| HARDNESS RATING | 55.0 ROCKWELL B NOMINAL OVERALL |
| MINIMUM TENSILE STRENGTH | 70000 POUNDS PER SQUARE INCH |
| HEAD STYLE | KNURLED NO. 1 |
| HEAD DIAMETER | 16.0 MILLIMETERS NOMINAL |
| HEAD HEIGHT | 7.0 MILLIMETERS NOMINAL |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 5.0 MILLIMETERS NOMINAL |
| SHOULDER SHAPE | ROUND OVERALL |
| SHOULDER DIAMETER | 9.928 MILLIMETERS MINIMUM AND |
| 10.010 MILLIMETERS MAXIMUM OVERALL |
| SHOULDER LENGTH | 8.00 MILLIMETERS MINIMUM AND |
| 8.25 MILLIMETERS MAXIMUM OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,SHOULDER |