| THREAD SERIES DESIGNATOR | M |
| NOMINAL THREAD DIAMETER | 4.0 MILLIMETERS |
| THREAD PITCH IN MILLIMETERS | 0.7 |
| THREAD CLASS | 6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 18.0 MILLIMETERS NOMINAL |
| FASTENER LENGTH | 18.0 MILLIMETERS NOMINAL |
| MATERIAL | STEEL PROPERTY CLASS 8.8 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ISO898-1 INTERNATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ISO4042,ZINC,1 COAT,COLORLESS INTERNATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | FLAT CHAMFER |
| HEAD DIAMETER | 6.78 MILLIMETERS MINIMUM AND |
| 7.22 MILLIMETERS MAXIMUM |
| HEAD HEIGHT | 3.82 MILLIMETERS MINIMUM AND |
| 4.00 MILLIMETERS MAXIMUM |
| CHAMFER ANGLE | 0.2 RADIANS MINIMUM |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 3.02 MILLIMETERS MINIMUM AND |
| 3.08 MILLIMETERS MAXIMUM |
| SPECIFICATION/STANDARD DATA | I9008-ISO4762 NATIONAL STD/SPEC |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | HEXAGON SOCKET HEAD CAP SCREW |