| END OVERALL LENGTH | 0.380 INCHES MINIMUM AND 0.386 INCHES MAXIMUM |
| HEAD DIAMETER | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM |
| MAJOR DIAMETER LENGTH | 0.125 INCHES MINIMUM AND 0.135 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| POSITIVE LOCK STUD SHANK STYLE | STUD SHANK |
| POSITIVE LOCK STUD HEAD STYLE | STUD HEAD |
| STUD SHANK OVERALL HEIGHT | 0.604 INCHES MINIMUM AND 0.636 INCHES MAXIMUM |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 0.250-28 UNF |
| UNDERCUT DIAMETER | 0.360 INCHES MINIMUM AND 0.370 INCHES MAXIMUM |
| UNDERCUT LENGTH | 0.167 INCHES MINIMUM AND 0.177 INCHES MAXIMUM |