DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.620 INCHES NOMINAL |
EXTENDED WASHER THICKNESS | 0.147 INCHES MINIMUM AND 0.155 INCHES MAXIMUM |
EXTENDED WASHER DIAMETER | 0.644 INCHES MINIMUM AND 0.654 INCHES MAXIMUM |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
FASTENER LENGTH | 1.500 INCHES NOMINAL |
FIRST DIAMETER FROM HEAD | 0.352 INCHES MINIMUM AND 0.355 INCHES MAXIMUM |
HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL |
HEAD HEIGHT | 0.430 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
MATERIAL | STEEL COMP 4037 OR STEEL COMP 4042 OVERALL |
MINIMUM YIELD STRENGTH | 140000 POUNDS PER SQUARE INCH |
MINIMUM TENSILE STRENGTH | 170000 POUNDS PER SQUARE INCH |
NOMINAL THREAD DIAMETER | 0.438 INCHES |
WIDTH BETWEEN FLATS | 0.432 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
THREAD DIRECTION | RIGHT-HAND |
THREAD CLASS | 3A |
THREAD LENGTH | 0.880 INCHES NOMINAL |
THREAD SERIES DESIGNATOR | UNF |
THREAD QUANTITY PER INCH | 20 |