THREAD SERIES DESIGNATOR | UNC |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
THREAD QUANTITY PER INCH | 20 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.375 INCHES MINIMUM |
FASTENER LENGTH | 1.031 INCHES NOMINAL |
MATERIAL | STEEL OVERALL |
MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634,COMPOSITION 1015 THRU 1025 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | PHOSPHATE OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-P-16232,TYPE M,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.187 INCHES NOMINAL |
WIDTH BETWEEN FLATS | 0.375 INCHES NOMINAL |
HOLE CONFIGURATION STYLE | HEXAGON LONGITUDINAL HOLE |
HOLE TYPE | DRILLED |
HOLE QUANTITY | 2 |
HOLE DIAMETER | 0.062 INCHES NOMINAL |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 4 |
FIRST DIAMETER FROM HEAD | 0.308 INCHES MINIMUM AND |
| 0.310 INCHES MAXIMUM |
SECOND DIAMETER FROM HEAD | 0.199 INCHES MINIMUM AND |
| 0.201 INCHES MAXIMUM |
THIRD DIAMETER FROM HEAD | 0.308 INCHES MINIMUM AND |
| 0.310 INCHES MAXIMUM |
FOURTH DIAMETER FROM HEAD | 0.182 INCHES MINIMUM AND |
| 0.187 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.219 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER | 0.302 INCHES MINIMUM AND |
| 0.312 INCHES MAXIMUM |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER | 0.438 INCHES NOMINAL |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FOURTH DIAMETER | 0.656 INCHES NOMINAL |
THE MANUFACTURERS DATA | |
MANUFACTURERS CODE | 10001 |
DESIGN CONTROL REFERENCE | 1788246 |