FASTENER LENGTH | 2.912 INCHES MINIMUM AND 3.000 INCHES MAXIMUM |
HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.749 INCHES MINIMUM AND 0.813 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
MATERIAL DOCUMENT AND CLASSIFICATION | SAE J429 GR8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
MATERIAL | STEEL OVERALL |
MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
NOMINAL THREAD DIAMETER | 1.250 INCHES |
NONDEFINITIVE SPEC/STD DATA | 2 TYPE AND Y10P STYLE AND 8 GRADE |
WIDTH BETWEEN FLATS | 1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | ZINC AND CHROMATE OVERALL |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 2.750 INCHES MINIMUM AND 2.938 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 12 |
THREAD SERIES DESIGNATOR | UNF |