DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 4.297 INCHES MINIMUM AND 4.357 INCHES MAXIMUM FIRST HOLE |
FASTENER LENGTH | 4.488 INCHES MINIMUM AND 4.528 INCHES MAXIMUM |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
MATERIAL | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
NOMINAL THREAD DIAMETER | 0.312 INCHES |
SHOULDER LENGTH | 4.000 INCHES MINIMUM AND 4.020 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE |
SHOULDER DIAMETER | 0.371 INCHES MINIMUM AND 0.374 INCHES MAXIMUM FIRST SHOULDER |
SPECIFICATION/STANDARD DATA | 80205-NAS1297 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.468 INCHES MINIMUM AND 0.528 INCHES MAXIMUM |
THREAD SERIES DESIGNATOR | UNJF |
THREAD QUANTITY PER INCH | 24 |