| FASTENER LENGTH | 40.00 MILLIMETERS NOMINAL |
| FEATURES PROVIDED | FINISHED HEAD |
| GRIP LENGTH | 11.80 MILLIMETERS MINIMUM AND 18.00 MILLIMETERS MAXIMUM |
| HARDNESS RATING | 27.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 5.1 MILLIMETERS MINIMUM AND 5.5 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR8 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1039 OR STEEL COMP 1040 OR STEEL COMP 1524 OR STEEL COMP 1527 OR STEEL COMP 1536 OR STEEL COMP 1541 OVERALL |
| MINIMUM TENSILE STRENGTH | 142230 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS |
| WIDTH BETWEEN FLATS | 12.7 MILLIMETERS MINIMUM AND 13.0 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 22.0 MILLIMETERS MINIMUM AND 28.2 MILLIMETERS MAXIMUM |
| THREAD SERIES DESIGNATOR | M |
| THREAD PITCH IN MILLIMETERS | 1.25 |