| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.642 INCHES MINIMUM AND 2.656 INCHES MAXIMUM FIRST HOLE |
| CONCENTRIC HOLE DEPTH | 2.460 INCHES MINIMUM AND 2.480 INCHES MAXIMUM |
| CONCENTRIC HOLE DIAMETER | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| FASTENER LENGTH | 2.770 INCHES MINIMUM AND 2.790 INCHES MAXIMUM |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SHOULDER LENGTH | 2.405 INCHES MINIMUM AND 2.409 INCHES MAXIMUM |
| SHANK UNTHREADED HOLE DIAMETER | 0.094 INCHES MINIMUM AND 0.101 INCHES MAXIMUM FIRST HOLE |
| SHOULDER DIAMETER | 0.505 INCHES MINIMUM AND 0.506 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
| STYLE DESIGNATOR | CONCENTRIC HOLE UNTHREADED |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.361 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNJF |