| COUNTERBORE DIAMETER | 0.187 INCHES MINIMUM AND 0.192 INCHES MAXIMUM FIRST END |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A581 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PILOT DIAMETER | 0.226 INCHES MINIMUM AND 0.230 INCHES MAXIMUM |
| PILOT LENGTH | 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.164 INCHES |
| NUT DIAMETER | 0.308 INCHES MINIMUM AND 0.316 INCHES MAXIMUM |
| NUT COUNTERBORE DEPTH | 0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM FIRST END |
| NUT HEIGHT | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |