| DEPARTURE FROM CITED DESIGNATOR | MODIFIED BY THREAD SIZE AND SERIES/TYPE DESIGNATOR |
| FLUTE QUANTITY | 4 |
| LENGTH | 1.000 INCHES MINIMUM AND 1.124 INCHES MAXIMUM SQUARE END |
| OVERALL LENGTH | 6.000 INCHES MINIMUM AND 6.124 INCHES MAXIMUM |
| MATERIAL | STEEL OVERALL |
| NONDEFINITIVE SPEC/STD DATA | I TYPE AND C SERIES AND C STYLE AND 1-5/16-12 SIZE |
| SHANK DIAMETER | 1.106 INCHES MINIMUM AND 1.110 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 0.823 INCHES MINIMUM AND 0.831 INCHES MAXIMUM |
| STARTING CHAMFER TYPE | BOTTOMING |
| STYLE DESIGNATOR | STRAIGHT FLUTE |
| THREAD LENGTH | 2.906 INCHES MINIMUM AND 3.094 INCHES MAXIMUM |
| THREAD PITCH DIAMETERS | +1.2594 TO 1.2604 INCHES |
| THREAD SIZE AND SERIES/TYPE DESIGNATOR | 1.312-12 UN |
| THREAD STRUCTURE | REGULAR |