| FASTENER LENGTH | 2.250 INCHES NOMINAL |
| HEAD DIAMETER | 1.375 INCHES NOMINAL |
| HEAD HEIGHT | 0.125 INCHES NOMINAL |
| HEAD STYLE | ROUND W/WRENCH FLATS |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-890, ALLOY NO. 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| SHOULDER DIAMETER | 0.7495 INCHES MINIMUM AND 0.7499 INCHES MAXIMUM SECOND SHOULDER |
| SHOULDER DIAMETER | 0.9364 INCHES MINIMUM AND 0.9367 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND ALL SHOULDERS |
| SHOULDER LENGTH | 0.625 INCHES MINIMUM AND 0.630 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 0.844 INCHES NOMINAL SECOND SHOULDER |
| WIDTH BETWEEN FLATS | 1.125 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-16232, TYPE 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.688 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNF |