| FASTENER LENGTH | 1.850 INCHES MINIMUM AND 1.880 INCHES MAXIMUM |
| HEAD DIAMETER | 0.735 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| HEAD HEIGHT | 0.492 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| HEAD STYLE | FLAT CHAMFER |
| INTERNAL DRIVE STYLE | HEXAGON |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| SPECIAL FEATURES | SUPPLY WITH GROOVE IN HEAD 0.595 IN. MIN. AND 0.605 IN. MAX DIA; 0.060 IN. MIN. AND 0.070 IN. MAX. LONG LOCATED 0.332 IN. MIN. AND 0.350 IN. MAX. FROM TOP OF HEAD |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2 FED SPEC SINGLE TREATMENT RESPONSE HEAD |
| SURFACE TREATMENT | CADMIUM AND CHROMATE HEAD |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.696 INCHES MINIMUM AND 1.880 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 13 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH ACROSS FLATS | 0.375 INCHES MINIMUM AND 0.379 INCHES MAXIMUM |