| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.274 INCHES MINIMUM AND 1.304 INCHES MAXIMUM FIRST HOLE |
| EXTENDED WASHER DIAMETER | 0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| FASTENER LENGTH | 1.420 INCHES MINIMUM AND 1.440 INCHES MAXIMUM |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.480 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON W/HOLE |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| SHOULDER DIAMETER | 0.435 INCHES MINIMUM AND 0.436 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.882 INCHES MINIMUM AND 0.892 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHANK UNTHREADED HOLE DIAMETER | 0.094 INCHES MINIMUM AND 0.101 INCHES MAXIMUM FIRST HOLE |
| WIDTH BETWEEN FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.456 INCHES MINIMUM AND 0.506 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |