| DIAMETER OF RECESSED PORTION OF SHANK | 0.190 INCHES MINIMUM AND 0.195 INCHES MAXIMUM |
| LENGTH OF RECESSED PORTION OF SHANK | 0.300 INCHES MINIMUM AND 0.330 INCHES MAXIMUM |
| OVERALL LENGTH | 1.580 INCHES NOMINAL |
| MATERIAL | STEEL CORROSION RESISTING |
| NOMINAL THREAD SIZE | 0.250 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.375 INCHES STUD THREAD |
| STYLE DESIGNATOR | RECESSED AND STEPPED |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.280 INCHES NOMINAL NUT THREAD |
| THREAD LENGTH | 0.650 INCHES NOMINAL STUD THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) NUT THREAD |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) STUD THREAD |
| THREAD QUANTITY PER INCH | 24 STUD THREAD |
| THREAD QUANTITY PER INCH | 28 NUT THREAD |