| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.125 INCHES NOMINAL |
| FASTENER LENGTH | 2.469 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| HARDNESS RATING | 300.0 BRINELL STANDARD MINIMUM AND 350.0 BRINELL STANDARD MAXIMUM OVERALL |
| HEAD HEIGHT | 0.312 INCHES NOMINAL |
| HEAD DIAMETER | 1.310 INCHES MINIMUM AND 1.370 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL | STEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 3135 OR STEEL COMP 4140 OR STEEL COMP 4135 OVERALL |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| RIB LENGTH | 0.625 INCHES MINIMUM AND 0.687 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 0.875 INCHES NOMINAL |
| RIB MINOR DIAMETER | 0.840 INCHES NOMINAL |
| RIB QUANTITY | 31 |
| SHOULDER DIAMETER | 0.840 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER LENGTH | 0.906 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | LEFT-HAND |
| THREAD LENGTH | 1.156 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNF |