| THREAD SERIES | ISO M |
| NOMINAL THREAD SIZE | 8.0 MILLIMETERS |
| THREAD PITCH IN MILLIMETERS | 1.25 |
| THREAD TOLERANCE CLASS | 6H INTERNAL |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 1010 OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | GM4435-M,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| NUT STYLE | HEXAGON |
| WASHER OUTSIDE DIAMETER | 17.75 MILLIMETERS MINIMUM AND |
| 18.25 MILLIMETERS MAXIMUM |
| OVERALL HEIGHT | 5.37 MILLIMETERS NOMINAL |
| WASHER THICKNESS | 0.64 MILLIMETERS MINIMUM AND |
| 0.97 MILLIMETERS MAXIMUM |
| WIDTH ACROSS FLATS | 12.73 MILLIMETERS MINIMUM AND |
| 13.00 MILLIMETERS MAXIMUM |
| SPECIAL FEATURES | BEARING SURFACE TO HAVE 24 EQUALLY SPACED SERRATIONS WITH SHARP EDGE FACING |