| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES DESIGNATOR | UNF |
| FASTENER LENGTH | 3.720 INCHES MINIMUM AND 3.780 INCHES MAXIMUM |
| HEAD DIAMETER | 0.945 INCHES MINIMUM AND 0.975 INCHES MAXIMUM |
| HEAD HEIGHT | 0.225 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | S.A.E. J429 GRADE 8 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT-WHEEL STUD |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| RIB MINOR DIAMETER | 0.663 INCHES MINIMUM AND 0.693 INCHES MAXIMUM |
| RIB QUANTITY | 30 |
| RIB LENGTH | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 0.671 INCHES MINIMUM AND 0.701 INCHES MAXIMUM |
| SURFACE TREATMENT | PHOSPHATE OVERALL AND OIL OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.735 INCHES MINIMUM AND 1.765 INCHES MAXIMUM |