| FASTENER LENGTH | 3.280 INCHES NOMINAL3.280 INCHES NOMINAL |
| HEAD DIAMETER | 1.313 INCHES NOMINAL1.313 INCHES NOMINAL |
| HEAD HEIGHT | 0.300 INCHES NOMINAL0.300 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFERFLAT CHAMFER |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.750 INCHES0.750 INCHES |
| RIB INCLUDED ANGLE | 6.0 DEGREES NOMINAL6.0 DEGREES NOMINAL |
| RIB LENGTH | 0.530 INCHES NOMINAL0.530 INCHES NOMINAL |
| RIB MAJOR DIAMETER | 0.815 INCHES NOMINAL0.815 INCHES NOMINAL |
| RIB MINOR DIAMETER | 0.780 INCHES NOMINAL0.780 INCHES NOMINAL |
| RIB QUANTITY | 2727 |
| SURFACE TREATMENT | CADMIUM AND DICHROMATE OVERALL |
| THREAD CLASS | 2A2A |
| THREAD DIRECTION | LEFT-HANDLEFT-HAND |
| THREAD LENGTH | 1.125 INCHES NOMINAL1.125 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 1616 |