| FASTENER LENGTH | 19.20 MILLIMETERS MINIMUM AND 20.00 MILLIMETERS MAXIMUM |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM PRIMARY WASHER |
| HEAD HEIGHT | 5.28 MILLIMETERS MINIMUM AND 5.84 MILLIMETERS MAXIMUM |
| HEAD STYLE | HEXAGON |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | GM 500-M 9.8 FSCM 11862 MFR REF SINGLE MATERIAL RESPONSE FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD ALL MATERIAL RESPONSES PRIMARY WASHER |
| MATERIAL | STEEL PRIMARY WASHER |
| NONMACHINE THREAD STYLE | DOG TYPE (TYPE B OR C) |
| NONMACHINE NOMINAL THREAD DIAMETER | 8.0 MILLIMETERS |
| PRIMARY WASHER MATERIAL THICKNESS | 2.30 MILLIMETERS MINIMUM AND 2.63 MILLIMETERS MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 23.48 MILLIMETERS MINIMUM AND 24.00 MILLIMETERS MAXIMUM |
| PRIMARY WASHER STYLE | SPRING TENSION |
| WASHER QUANTITY | 1 |
| WIDTH BETWEEN FLATS | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | GM 6174-M,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 16.12 MILLIMETERS MAXIMUM |
| THREAD PITCH IN MILLIMETERS | 1.25 |