| THREAD SERIES DESIGNATOR | UNS |
| NOMINAL THREAD DIAMETER | 0.375 INCHES |
| THREAD QUANTITY PER INCH | 24 |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.635 INCHES MINIMUM AND |
| 0.675 INCHES MAXIMUM |
| FASTENER LENGTH | 3.115 INCHES MINIMUM AND |
| 3.135 INCHES MAXIMUM |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 7470 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND |
| 38.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | HEXAGON |
| HEAD HEIGHT | 0.209 INCHES MINIMUM AND |
| 0.229 INCHES MAXIMUM |
| WIDTH BETWEEN FLATS | 0.553 INCHES MINIMUM AND |
| 0.564 INCHES MAXIMUM |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 3 |
| FIRST DIAMETER FROM HEAD | 0.384 INCHES NOMINAL |
| SECOND DIAMETER FROM HEAD | 0.315 INCHES MINIMUM AND |
| 0.325 INCHES MAXIMUM |
| THIRD DIAMETER FROM HEAD | 0.384 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.490 INCHES MINIMUM AND |
| 0.510 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 1.990 INCHES MINIMUM AND |
| 2.010 INCHES MAXIMUM |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 2.440 INCHES MINIMUM AND |
| 2.500 INCHES MAXIMUM |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 77445 |
| DESIGN CONTROL REFERENCE | 211087P10 |