| EXTENDED WASHER DIAMETER | 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.129 INCHES MINIMUM |
| FASTENER LENGTH | 1.640 INCHES MINIMUM AND 1.750 INCHES MAXIMUM |
| FEATURES PROVIDED | FINISHED HEAD |
| GRIP LENGTH | 0.210 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.500 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.500 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 13 |
| THREAD SERIES DESIGNATOR | UNC |
| WIDTH BETWEEN FLATS | 0.493 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |