| CRITICALITY CODE JUSTIFICATION | AAZE |
| FLUTE QUANTITY | 3 |
| OVERALL LENGTH | 2.680 INCHES MINIMUM AND 2.750 INCHES MAXIMUM |
| MATERIAL AND LOCATION | STEEL OVERALL |
| NONDEFINITIVE SPEC/STD DATA | 1 TYPE AND 2 CLASS |
| SHANK DIAMETER | 0.3165 INCHES MINIMUM AND 0.3180 INCHES MAXIMUM |
| SQUARE END LENGTH | 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM |
| STARTING CHAMFER TYPE | PLUG |
| SPECIAL FEATURES | ROUGHING TAP FOR SCREW THREAD INSERT |
| WIDTH ACROSS FLATS | 0.234 INCHES MINIMUM AND 0.238 INCHES MAXIMUM |
| STYLE DESIGNATOR | SPIRAL POINTED FLUTE |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD FORMING METHOD | GROUND |
| THREAD LENGTH | 1.062 INCHES MINIMUM AND 1.188 INCHES MAXIMUM |
| THREAD PITCH DIAMETERS | +0.2737 TO 0.2742 INCHES |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 0.250-28 STI |
| THREAD STRUCTURE | REGULAR |