| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 3.889 INCHES NOMINAL ALL HOLES |
| CONCENTRIC HOLE DIAMETER | 0.490 INCHES NOMINAL |
| FASTENER LENGTH | 4.092 INCHES NOMINAL |
| HEAD HEIGHT | 0.312 INCHES NOMINAL |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | ST-05-501 FSCM 98897 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| MINIMUM TENSILE STRENGTH | 280000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 1.125 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.141 INCHES NOMINAL ALL HOLES |
| SHOULDER DIAMETER | 1.569 INCHES MINIMUM AND 1.571 INCHES MAXIMUM |
| SHOULDER LENGTH | 3.335 INCHES MINIMUM AND 3.345 INCHES MAXIMUM |
| SPECIAL FEATURES | FOUR HOLES 90 DEGREES APART RADIAL LOCATION OPTIONAL |
| WIDTH BETWEEN FLATS | 2.188 INCHES NOMINAL |
| STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 12 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |