| FASTENER LENGTH | 19.58 MILLIMETERS MINIMUM AND 20.42 MILLIMETERS MAXIMUM |
| HEAD HEIGHT | 5.15 MILLIMETERS MINIMUM AND 5.45 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | FASTENERS - HEXAGON HEAD SCREWS - PRODUCT GRADES A AND B |
| NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS |
| WIDTH BETWEEN FLATS | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM |
| SPECIFICATION/STANDARD DATA | I9008-ISO 4017 INTERNATIONAL STD/SPEC |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 6G |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 19.58 MILLIMETERS MINIMUM AND 20.42 MILLIMETERS MAXIMUM |
| THREAD SERIES DESIGNATOR | M |
| THREAD PITCH IN MILLIMETERS | 1.25 |