| FASTENER LENGTH | 2.563 INCHES NOMINAL |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1040 OR STEEL COMP 1042 OR STEEL COMP 1043 OVERALL |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| SHOULDER DIAMETER | 0.750 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 1.547 INCHES MINIMUM AND 1.579 INCHES MAXIMUM FIRST SHOULDER |
| SPECIAL FEATURES | OLIVE DRAB |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.609 INCHES MINIMUM AND 0.641 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 11 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |