| HEAD COUNTERSINK ANGLE | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| HEAD DIAMETER | 0.656 INCHES NOMINAL |
| HEAD STYLE | FLAT COUNTERSUNK |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 430 OVERALL |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT DIAMETER | 0.409 INCHES MINIMUM AND 0.413 INCHES MAXIMUM |
| NUT GRIP RANGE | +0.231 TO 0.256 INCHES |
| NUT LENGTH | 1.391 INCHES MINIMUM AND 1.421 INCHES MAXIMUM |
| NUT STYLE | BLIND RIVET W/SMOOTH ROUND SHANK |
| SHANK END TYPE | CLOSED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |