| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.349 INCHES MINIMUM AND 0.411 INCHES MAXIMUM |
| FASTENER LENGTH | 2.810 INCHES MINIMUM AND 2.841 INCHES MAXIMUM |
| HEAD HEIGHT | 0.310 INCHES MINIMUM AND 0.341 INCHES MAXIMUM |
| HEAD DIAMETER | 1.310 INCHES MINIMUM AND 1.370 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL | STEEL COMP 3130 OR STEEL COMP 3140 OVERALL |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| RIB INCLUDED ANGLE | 90.0 DEGREES NOMINAL |
| RIB LENGTH | 0.560 INCHES MINIMUM AND 0.622 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 0.998 INCHES MINIMUM AND 1.008 INCHES MAXIMUM |
| RIB MINOR DIAMETER | 0.946 INCHES NOMINAL |
| RIB QUANTITY | 36 |
| SHOULDER DIAMETER | 0.974 INCHES MINIMUM AND 0.975 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 1.160 INCHES MINIMUM AND 1.220 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | LEFT-HAND |
| THREAD LENGTH | 1.191 INCHES MINIMUM AND 1.221 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 16 |