| LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN |
| MATERIAL DOCUMENT AND CLASSIFICATION | C1110 GRADE B |
| MATERIAL | STEEL OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | TOP DISTORTION PREVAILING-TORQUE HEX LOCKNUT |
| NOMINAL THREAD SIZE | 0.312 INCHES |
| NUT HEIGHT | 0.266 INCHES MAXIMUM |
| NUT STYLE | HEXAGON |
| SPECIAL FEATURES | FOR USE WITH GRADE 5 BOLTS |
| WIDTH ACROSS FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM |
| SUPPLEMENTARY FEATURES | MINIMUM TENSILE STRENGTH: 120,000.00 PSI |
| THREAD QUANTITY PER INCH | 18 |
| THREAD SERIES | UNC |