DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.628 INCHES NOMINAL FIRST HOLE |
FASTENER LENGTH | 1.740 INCHES MINIMUM AND 1.750 INCHES MAXIMUM |
FEATURES PROVIDED | FINISHED HEAD |
HARDNESS RATING | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM |
HEAD DIAMETER | 0.348 INCHES MINIMUM AND 0.358 INCHES MAXIMUM |
HEAD STYLE | ROUND W/WRENCH FLATS |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
MATERIAL | STEEL COMP 630 OVERALL |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
SHANK UNTHREADED HOLE DIAMETER | 0.042 INCHES NOMINAL FIRST HOLE |
WIDTH BETWEEN FLATS | 0.580 INCHES MINIMUM AND 0.600 INCHES MAXIMUM |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.388 INCHES MINIMUM AND 0.406 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 28 |
THREAD SERIES DESIGNATOR | UNF |