| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| CROSS-SECTIONAL SHAPE | HEXAGON |
| WIDTH ACROSS FLATS | 4.50 MILLIMETERS NOMINAL |
| STYLE DESIGNATOR | INTERNALLY THREADED FULL LENGTH |
| LENGTH | 3.00 MILLIMETERS NOMINAL |
| THREAD SERIES DESIGNATOR | M LEFT INTERNAL (INCLUDES THRU THREAD) |
| NOMINAL THREAD SIZE | 2.5 MILLIMETERS LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD PITCH IN MILLIMETERS | 0.45 LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD TOLERANCE CLASS | 4H/6H INTERNAL LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD DIRECTION | RIGHT-HAND LEFT INTERNAL (INCLUDES THRU THREAD) |
| THREAD LENGTH | 3.00 MILLIMETERS NOMINAL LEFT INTERNAL (INCLUDES THRU THREAD) |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | 4.5 MM HEX FEMALE STANDOFFS |