THREAD SERIES DESIGNATOR | UNF |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
THREAD QUANTITY PER INCH | 20 |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.388 INCHES MINIMUM AND |
| 0.435 INCHES MAXIMUM |
FASTENER LENGTH | 2.734 INCHES MINIMUM AND |
| 2.781 INCHES MAXIMUM |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM OVERALL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
HARDNESS RATING | 58.0 ROCKWELL C MINIMUM AND |
| 64.0 ROCKWELL C MAXIMUM OVERALL |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.250 INCHES NOMINAL |
WIDTH BETWEEN FLATS | 0.875 INCHES NOMINAL |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SHOULDER DIAMETER | 0.5595 INCHES MINIMUM AND |
| 0.5604 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER LENGTH | 2.222 INCHES NOMINAL FIRST SHOULDER |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 2.106 INCHES NOMINAL FIRST HOLE |
SHANK UNTHREADED HOLE DIAMETER | 0.577 INCHES NOMINAL FIRST HOLE |
THE MANUFACTURERS DATA | |
MANUFACTURERS CODE | 78286 |
DESIGN CONTROL REFERENCE | S6120-65164-3 |