| EXTENDED WASHER THICKNESS | 0.090 INCHES MINIMUM AND 0.117 INCHES MAXIMUM |
| EXTENDED WASHER DIAMETER | 0.805 INCHES MINIMUM AND 0.827 INCHES MAXIMUM |
| FASTENER LENGTH | 1.975 INCHES MINIMUM AND 2.013 INCHES MAXIMUM |
| FEATURES PROVIDED | HEX NUT AND WASHER |
| HARDNESS RATING | 35.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM FASTENER |
| HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM PRIMARY WASHER |
| HEAD HEIGHT | 0.430 INCHES MINIMUM AND 0.480 INCHES MAXIMUM |
| HEAD MINOR DIAMETER | 0.420 INCHES MINIMUM |
| HEAD STYLE | SPLINE DRIVE SHEAR HEAD |
| MATERIAL | STEEL COMP 1050 OR STEEL COMP 1053 OR STEEL COMP 1054 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 PRIMARY WASHER |
| MATERIAL | STEEL PROPERTY CLASS 8.8 FASTENER |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | BOLT,SPECIAL 12-PT TORQUE-OFF HEAD |
| PROPRIETARY CHARACTERISTICS | PACS |
| NOMINAL THREAD DIAMETER | 0.4375 INCHES |
| SPECIAL FEATURES | NUT OVERALL HEIGHT: 0.272"-0.291", WIDTH BETWEEN FLATS: 0.698"-0.708"; FINISH: PHOSPHATE COATING, PLUS EVERLUBE 6102G AND HENKEL OIL 2945; 72 HOURS MINIMUM TO RED RUST |
| WIDTH BETWEEN FLATS | 0.698 INCHES MINIMUM AND 0.708 INCHES MAXIMUM |
| SURFACE TREATMENT | PHOSPHATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.050 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES DESIGNATOR | UNRF |