| CROSS-SECTIONAL SHAPE | HEXAGON |
| LEFT PROJECTION DIAMETER | 0.250 INCHES NOMINAL |
| LEFT PROJECTION LENGTH | 0.250 INCHES NOMINAL |
| LENGTH | 1.44 INCHES NOMINAL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES LEFT EXTERNAL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | STUD |
| RIGHT PROJECTION DIAMETER | 0.312 INCHES NOMINAL |
| RIGHT PROJECTION LENGTH | 0.630 INCHES NOMINAL |
| SECOND SHOULDER WIDTH ACROSS FLATS | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| STYLE DESIGNATOR | PROJECTION BOTH ENDS |
| THREAD DIRECTION | RIGHT-HAND RIGHT EXTERNAL |
| THREAD LENGTH | 0.630 INCHES NOMINAL RIGHT EXTERNAL |
| THREAD LENGTH | 0.630 INCHES NOMINAL LEFT EXTERNAL |
| THREAD QUANTITY PER INCH | 18 RIGHT EXTERNAL |
| THREAD QUANTITY PER INCH | 20 LEFT EXTERNAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) LEFT EXTERNAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) RIGHT EXTERNAL |