| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1117 OVERALL |
| NOMINAL THREAD SIZE | 0.375 INCHES |
| NUT HEIGHT | 0.266 INCHES MINIMUM AND 0.282 INCHES MAXIMUM |
| NUT STYLE | CLINCH |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
| PILOT DIAMETER | 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.553 INCHES MINIMUM AND 0.565 INCHES MAXIMUM |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL C FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2B |
| THREAD SERIES | UNF |
| THREAD QUANTITY PER INCH | 24 |