| FASTENER LENGTH | 20.0 MILLIMETERS NOMINAL |
| HEAD HEIGHT | 5.10 MILLIMETERS MINIMUM AND 5.50 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A354,GRADE BD ALLOY STEEL K04100 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | SCREW,CAP,HEX |
| NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS |
| SPECIFICATION/STANDARD DATA | 0504-ASME B18.24-2015 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM F2833,GRADE 1 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC AND ALUMINUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 20.0 MILLIMETERS NOMINAL |
| THREAD PITCH IN MILLIMETERS | 1.25 |
| THREAD SERIES DESIGNATOR | M |
| WIDTH BETWEEN FLATS | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM |