| COUNTERSINK ANGLE | 15.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.97 INCHES MINIMUM AND 1.02 INCHES MAXIMUM |
| HEAD DIAMETER | 0.688 INCHES MINIMUM AND 0.719 INCHES MAXIMUM |
| HEAD HEIGHT | 0.156 INCHES MINIMUM AND 0.176 INCHES MAXIMUM |
| HEAD STYLE | TRUSS |
| MATERIAL | STEEL PROPERTY CLASS 18.8 OVERALL |
| NECK LENGTH | 0.156 INCHES MINIMUM AND 0.187 INCHES MAXIMUM |
| NECK WIDTH | 0.307 INCHES MINIMUM AND 0.324 INCHES MAXIMUM |
| NOMINAL THREAD DIAMETER | 0.3125 INCHES |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.81 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 18 |