| COUNTERSINK ANGLE | 85.0 DEGREES MINIMUM NUT |
| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| LUBRICATION | SOLUBLE LUBRICANT |
| NUT STYLE | SPLINE |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS6487 ASSN STD 1ST MATERIAL RESPONSE OR AMS6304 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP H11 OR STEEL OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| NUT DIAMETER | 0.639 INCHES MINIMUM AND 0.649 INCHES MAXIMUM |
| NUT HEIGHT | 0.455 INCHES MAXIMUM |
| PILOT DIAMETER | 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM |
| PILOT LENGTH | 0.070 INCHES NOMINAL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| TEMP RATING | 450.0 FAHRENHEIT MAXIMUM |
| THREAD CLASS | 3B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD PITCH DIAMETERS | +0.3479 TO 0.3516 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD SERIES | UNIFIED NATIONAL JOINT FINE (UNJF) |