| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 4.000 INCHES NOMINAL FIRST HOLE |
| FASTENER LENGTH | 4.250 INCHES NOMINAL |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 2.250 INCHES NOMINAL |
| HEAD LENGTH | 1.000 INCHES NOMINAL |
| HEAD STYLE | TEE NO. 3 |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4135 OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| SHANK UNTHREADED HOLE DIAMETER | 0.219 INCHES NOMINAL FIRST HOLE |
| SPECIAL FEATURES | FED STD 595 COLOR NO. X24087 |
| WIDTH BETWEEN FLATS | 0.969 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TYPE 2 CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | TT-E-529 FED SPEC SINGLE TREATMENT RESPONSE GRIP |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | TT-E-529 FED SPEC SINGLE TREATMENT RESPONSE HEAD |
| SURFACE TREATMENT | ENAMEL GRIP |
| SURFACE TREATMENT | ENAMEL HEAD |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.375 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 13 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |