| COUNTERBORE DIAMETER | 0.293 INCHES MINIMUM NUT AND 0.297 INCHES MAXIMUM NUT |
| COUNTERSINK ANGLE | 90.0 DEGREES NOMINAL NUT |
| MATERIAL DOCUMENT AND CLASSIFICATION | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 303 OVERALL |
| PILOT DIAMETER | 0.364 INCHES MINIMUM AND 0.368 INCHES MAXIMUM |
| PILOT LENGTH | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT COUNTERBORE DEPTH | 0.308 INCHES MINIMUM NUT AND 0.318 INCHES MAXIMUM NUT |
| NUT DIAMETER | 0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM |
| NUT HEIGHT | 0.427 INCHES MINIMUM AND 0.447 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNC |