| COUNTERSINK ANGLE | 120.0 DEGREES NOMINAL NUT |
| FEATURES PROVIDED | CASEHARDENED |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-637 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 1211 OR STEEL COMP 1213 OVERALL |
| NOMINAL THREAD SIZE | 0.250 INCHES |
| NUT HEIGHT | 0.196 INCHES MINIMUM AND 0.206 INCHES MAXIMUM |
| NUT DIAMETER | 0.464 INCHES MINIMUM AND 0.468 INCHES MAXIMUM |
| NUT STYLE | SPLINE |
| PILOT LENGTH | 0.112 INCHES MINIMUM AND 0.117 INCHES MAXIMUM |
| PILOT DIAMETER | 0.396 INCHES MINIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2B |
| THREAD SERIES | UNF |
| THREAD QUANTITY PER INCH | 28 |