| CRITICALITY CODE JUSTIFICATION | ZZZY |
| EXTENDED WASHER DIAMETER | 1.047 INCHES NOMINAL |
| EXTENDED WASHER THICKNESS | 0.016 INCHES NOMINAL |
| FASTENER LENGTH | 2.235 INCHES MINIMUM AND 2.280 INCHES MAXIMUM |
| HARDNESS RATING | 36.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.390 INCHES MINIMUM AND 0.422 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MINIMUM YIELD STRENGTH | 125000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.750 INCHES |
| PRIMARY WASHER OUTSIDE DIAMETER | 1.047 INCHES NOMINAL |
| PRIMARY WASHER MATERIAL THICKNESS | 0.016 INCHES NOMINAL |
| REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| WASHER QUANTITY | 1 |
| WIDTH BETWEEN FLATS | 1.053 INCHES MINIMUM AND 1.066 INCHES MAXIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.250 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 16 |
| THREAD SERIES DESIGNATOR | UNF |